Gun - Xtreme Limited Custom 40
Add-ons - Henning Flat Trigger
Problem - Running this set-up for approx 5k rounds. This problem just started.
During a course of fire my trigger doesn't release the sear. The trigger has full range of motion when this happens (not trigger freeze, I've stopped to look at this closer), the hammer is cocked and the safety is off. (I believe the only issue this can be is that the trigger bar is not coming up) Rack the slide and it goes bang. Sometimes this will happen once in a stage or three times, I can go 4 or 5 stages without this happening and it may happen 3 or 4 stages in a row.
I have put in a heavier trigger return spring, doubled my pre-travel and over-travel on the trigger (shot a match after this and the problem happened once in 100+ rounds). I've checked the plunger which has the heavier stock spring, seems to function fine (I've ordered a new plunger set-up anyway)
Has anyone had this issue and identified the problem?
Thanks in advance.