Black rain (scrubbed) trigger not resetting 100%

[ssgrock3]

I used jp pins, is it not getting the movement to reset 100% reliably? I saw on another board someone else said theirs doesn't always reset, I can nudge mine or if I pause it will most often click forward. Only thing I can figure are the pins. Anyone know for sure?

 

[caojyn]

Here's your problem
[video]

 

[bigfug]

Probably a burr, my PSA premium did same thing, I just pulled the upper, and sat there resetting the hammer by hand and dry firing repeatedly for a bit fixed it. Could polish the surfaces too.