fixes #1311

src/server/items/generators/stats.js

@@ -660,9 +660,10 @@ module.exports = {
 				stat: i.stat
 			};
 
-			if (i.value) 
-				stat.value = i.value[0] + ~~(Math.random() * (i.value[1] - i.value[0] + 1));
-			else if (i.valueMult) {
+			if (i.value) {
+				const [min, max] = i.value;
+				stat.value = Math.ceil(random.expNorm(min, max));
+			} else if (i.valueMult) {
 				let statBlueprint = this.stats[i.stat];
 
 				if (statBlueprint.generator) {

src/server/misc/random.js

@@ -27,14 +27,9 @@ extend(random, {
 	},
 
 	expNorm: function(low, high) {
-		var roll = random.norm(0, 100);
-		if (roll > 50)
-			roll = 100 - roll;
-		
-		roll = (50 - roll) / 50;
-		
-		roll = low + ((high - low) * roll);
+		var roll = Math.abs(random.norm(0, 100) - 50) / 50;
+		const result = low + ((high - low) * roll);
 
-		return roll;
+		return result;
 	}
 });