[LocoYokoPoco]

Try loosening the screw for the hop-up adjustment ring. That will probably fix your over hop issue. But just make sure it's NOT loose enough to fall out or wiggle.

And just an update, my M4 finally had a major failure after about the 25,000 round mark. Part #2, the feeding lamp and the as well as the Hop-Up base both cracked. The gun still functioned fine, but I was a bit worried cause the bolt's guide rod wasn't secured so the bolt had a lot of side to side movement. So I ordered the parts from Capital and replaced em and it's as good as new.