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Trigger is may be sl. too wide. It may need light fitting.
Does it swing free when disconnected from the trigger bar?
Did you remove any springs from the trigger pack?
Hopefully the trigger bar is not bent.
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Only the gen 1 packs had the extra spring to make sure the trigger returned. Most people myself included disconnected that spring and latter packs deleted it entirely from the design so I highly doubt its that. (Unless you aren't talking about the pack with the hammer in it)
I have one in my x95 I've had no issues Op so I don't know what it could be. It's been over a year since I installed it too. Isn't there a spring of some sort that interacts with the trigger itself to push it forward? If I remember correctly it's right under the trigger itself that would be the first thing I'd check that and the gentleman above me suggestion about seeing if it is a figment issue with the polymer around the trigger being too smug and causing drag.