No reason to String.valueOf() these.

src/main/java/com/gmail/nossr50/commands/player/McrankCommand.java

@@ -102,7 +102,7 @@ public class McrankCommand implements CommandExecutor {
                 sender.sendMessage(LocaleLoader.getString("Commands.mcrank.Skill", SkillTools.getSkillName(skillType), LocaleLoader.getString("Commands.mcrank.Unranked"))); // Don't bother showing ranking for players without skills
             }
             else {
-                sender.sendMessage(LocaleLoader.getString("Commands.mcrank.Skill", SkillTools.getSkillName(skillType), String.valueOf(rankInts[0])));
+                sender.sendMessage(LocaleLoader.getString("Commands.mcrank.Skill", SkillTools.getSkillName(skillType), rankInts[0]));
             }
         }
 
@@ -113,7 +113,7 @@ public class McrankCommand implements CommandExecutor {
             sender.sendMessage(LocaleLoader.getString("Commands.mcrank.Overall", LocaleLoader.getString("Commands.mcrank.Unranked"))); // Don't bother showing ranking for players without skills
         }
         else {
-            sender.sendMessage(LocaleLoader.getString("Commands.mcrank.Overall", String.valueOf(rankInts[0])));
+            sender.sendMessage(LocaleLoader.getString("Commands.mcrank.Overall", rankInts[0]));
         }
     }
 

src/main/java/com/gmail/nossr50/commands/player/McstatsCommand.java

@@ -35,10 +35,10 @@ public class McstatsCommand implements CommandExecutor {
             int powerLevelCap = Config.getInstance().getPowerLevelCap();
 
             if (powerLevelCap != Integer.MAX_VALUE) {
-                player.sendMessage(LocaleLoader.getString("Commands.PowerLevel.Capped", String.valueOf(mcMMOPlayer.getPowerLevel()), String.valueOf(powerLevelCap)));
+                player.sendMessage(LocaleLoader.getString("Commands.PowerLevel.Capped", mcMMOPlayer.getPowerLevel(), powerLevelCap));
             }
             else {
-                player.sendMessage(LocaleLoader.getString("Commands.PowerLevel", String.valueOf(mcMMOPlayer.getPowerLevel())));
+                player.sendMessage(LocaleLoader.getString("Commands.PowerLevel", mcMMOPlayer.getPowerLevel()));
             }
 
             return true;

src/main/java/com/gmail/nossr50/runnables/McTopAsync.java

@@ -54,7 +54,7 @@ public class McTopAsync implements Runnable {
                     }
 
                     // Format: 1. Playername - skill value
-                    sender.sendMessage(String.valueOf(place) + ". " + ChatColor.GREEN + userslist.get(i).get(1) + " - " + ChatColor.WHITE + userslist.get(i).get(0));
+                    sender.sendMessage(place + ". " + ChatColor.GREEN + userslist.get(i).get(1) + " - " + ChatColor.WHITE + userslist.get(i).get(0));
                     place++;
                 }
 

src/main/java/com/gmail/nossr50/skills/repair/SimpleRepairManager.java

@@ -76,7 +76,7 @@ public class SimpleRepairManager implements RepairManager {
 
         // Level check
         if (skillLevel < repairable.getMinimumLevel()) {
-            player.sendMessage(LocaleLoader.getString("Repair.Skills.Adept", String.valueOf(repairable.getMinimumLevel()), StringUtils.getPrettyItemString(item.getTypeId())));
+            player.sendMessage(LocaleLoader.getString("Repair.Skills.Adept", repairable.getMinimumLevel(), StringUtils.getPrettyItemString(item.getTypeId())));
             return;
         }
 

src/main/java/com/gmail/nossr50/skills/utilities/SkillTools.java

@@ -263,11 +263,11 @@ public class SkillTools {
                     }
                 }
                 else {
-                    player.sendMessage(LocaleLoader.getString(capitalized + ".Skillup", String.valueOf(skillups), profile.getSkillLevel(skillType)));
+                    player.sendMessage(LocaleLoader.getString(capitalized + ".Skillup", skillups, profile.getSkillLevel(skillType)));
                 }
             }
             else {
-                player.sendMessage(LocaleLoader.getString(capitalized + ".Skillup", String.valueOf(skillups), profile.getSkillLevel(skillType)));
+                player.sendMessage(LocaleLoader.getString(capitalized + ".Skillup", skillups, profile.getSkillLevel(skillType)));
             }
         }