First I would have a conversation with both GM's at once. Make sure they agree that your character is broken and make sure to get them to tell you exactly what they think is broken. Then I would request to try and play the character as is to see if its a big problem in game with the understanding that you will change it if it is. Its difficult to say without looking at the other characters, but your monk while optimized, doesn't look like a problem character. Damage(particularly melee single target) is probably the least problematic thing a character can do well. Frankly out of the rest of the party, the magus is probably the only one who can do good single target damage, which is something a party needs. Everyone else probably does much better with groups of enemies and far exceed you in utility.