diff --git a/pool/page_workmgt.php b/pool/page_workmgt.php
index ef3a1161..e77ba671 100644
--- a/pool/page_workmgt.php
+++ b/pool/page_workmgt.php
@@ -45,6 +45,10 @@ function workmgtuser($data, $user, $err)
 		$offset++;
 	}
  }
+ $pg .= '<tr><td colspan=2 class=dc><font size=-1><span class=st1>*</span>';
+ $pg .= ' A value of 0, less than the pool default,<br>';
+ $pg .= 'or less than the pool calculated value for you,<br>';
+ $pg .= 'will use the pool calculated value</font></td></tr>';
  $pg .= "</table><input type=hidden name=rows value=$count></form>\n";
 
  return $pg;
diff --git a/src/ckdb.h b/src/ckdb.h
index 37fadec1..a03ba095 100644
--- a/src/ckdb.h
+++ b/src/ckdb.h
@@ -52,7 +52,7 @@
 
 #define DB_VLOCK "1"
 #define DB_VERSION "0.9.2"
-#define CKDB_VERSION DB_VERSION"-0.405"
+#define CKDB_VERSION DB_VERSION"-0.406"
 
 #define WHERE_FFL " - from %s %s() line %d"
 #define WHERE_FFL_HERE __FILE__, __func__, __LINE__
@@ -597,15 +597,17 @@ extern K_LIST *workers_free;
 extern K_STORE *workers_store;
 
 #define DIFFICULTYDEFAULT_MIN 10
-#define DIFFICULTYDEFAULT_MAX 1000000
-#define DIFFICULTYDEFAULT_DEF DIFFICULTYDEFAULT_MIN
+#define DIFFICULTYDEFAULT_MAX 0x7fffffff
+// 0 means it's not set
+#define DIFFICULTYDEFAULT_DEF 0
 #define DIFFICULTYDEFAULT_DEF_STR STRINT(DIFFICULTYDEFAULT_DEF)
 #define IDLENOTIFICATIONENABLED "y"
 #define IDLENOTIFICATIONDISABLED " "
 #define IDLENOTIFICATIONENABLED_DEF IDLENOTIFICATIONDISABLED
 #define IDLENOTIFICATIONTIME_MIN 10
 #define IDLENOTIFICATIONTIME_MAX 60
-#define IDLENOTIFICATIONTIME_DEF IDLENOTIFICATIONTIME_MIN
+// 0 means it's not set and will be flagged disabled
+#define IDLENOTIFICATIONTIME_DEF 0
 #define IDLENOTIFICATIONTIME_DEF_STR STRINT(IDLENOTIFICATIONTIME_DEF)
 
 // PAYMENTADDRESSES
diff --git a/src/ckdb_cmd.c b/src/ckdb_cmd.c
index b5abc749..77c27c4e 100644
--- a/src/ckdb_cmd.c
+++ b/src/ckdb_cmd.c
@@ -355,10 +355,12 @@ static char *cmd_workerset(PGconn *conn, char *cmd, char *id, tv_t *now,
 				continue;
 
 			difficultydefault = atoi(transfer_data(i_diffdef));
-			if (difficultydefault < DIFFICULTYDEFAULT_MIN)
-				difficultydefault = DIFFICULTYDEFAULT_MIN;
-			if (difficultydefault > DIFFICULTYDEFAULT_MAX)
-				difficultydefault = DIFFICULTYDEFAULT_MAX;
+			if (difficultydefault != 0) {
+				if (difficultydefault < DIFFICULTYDEFAULT_MIN)
+					difficultydefault = DIFFICULTYDEFAULT_MIN;
+				if (difficultydefault > DIFFICULTYDEFAULT_MAX)
+					difficultydefault = DIFFICULTYDEFAULT_MAX;
+			}
 
 			if (workers->difficultydefault != difficultydefault) {
 				/* This uses a seperate txn per update
diff --git a/src/ckdb_dbio.c b/src/ckdb_dbio.c
index a7f4a2e2..4033f13f 100644
--- a/src/ckdb_dbio.c
+++ b/src/ckdb_dbio.c
@@ -1068,6 +1068,7 @@ K_ITEM *workers_add(PGconn *conn, int64_t userid, char *workername,
 		conned = true;
 	}
 
+	bzero(row, sizeof(*row));
 	row->workerid = nextid(conn, "workerid", (int64_t)1, cd, by, code, inet);
 	if (row->workerid == 0)
 		goto unitem;
@@ -1076,10 +1077,13 @@ K_ITEM *workers_add(PGconn *conn, int64_t userid, char *workername,
 	STRNCPY(row->workername, workername);
 	if (difficultydefault && *difficultydefault) {
 		diffdef = atoi(difficultydefault);
-		if (diffdef < DIFFICULTYDEFAULT_MIN)
-			diffdef = DIFFICULTYDEFAULT_MIN;
-		if (diffdef > DIFFICULTYDEFAULT_MAX)
-			diffdef = DIFFICULTYDEFAULT_MAX;
+		// If out of the range, set it in the range
+		if (diffdef != DIFFICULTYDEFAULT_DEF) {
+			if (diffdef < DIFFICULTYDEFAULT_MIN)
+				diffdef = DIFFICULTYDEFAULT_MIN;
+			if (diffdef > DIFFICULTYDEFAULT_MAX)
+				diffdef = DIFFICULTYDEFAULT_MAX;
+		}
 		row->difficultydefault = diffdef;
 	} else
 		row->difficultydefault = DIFFICULTYDEFAULT_DEF;
@@ -1095,15 +1099,20 @@ K_ITEM *workers_add(PGconn *conn, int64_t userid, char *workername,
 
 	if (idlenotificationtime && *idlenotificationtime) {
 		nottime = atoi(idlenotificationtime);
-		if (nottime < DIFFICULTYDEFAULT_MIN) {
-			row->idlenotificationenabled[0] = IDLENOTIFICATIONDISABLED[0];
-			nottime = DIFFICULTYDEFAULT_MIN;
-		} else if (nottime > IDLENOTIFICATIONTIME_MAX)
-			nottime = row->idlenotificationtime;
+		if (nottime != IDLENOTIFICATIONTIME_DEF) {
+			// If out of the range, set to default
+			if (nottime < IDLENOTIFICATIONTIME_MIN ||
+			    nottime > IDLENOTIFICATIONTIME_MAX)
+				nottime = IDLENOTIFICATIONTIME_DEF;
+		}
 		row->idlenotificationtime = nottime;
 	} else
 		row->idlenotificationtime = IDLENOTIFICATIONTIME_DEF;
 
+	// Default is disabled
+	if (row->idlenotificationtime == IDLENOTIFICATIONTIME_DEF)
+		row->idlenotificationenabled[0] = IDLENOTIFICATIONDISABLED[0];
+
 	HISTORYDATEINIT(row, cd, by, code, inet);
 	HISTORYDATETRANSFER(trf_root, row);