Whichever section isn't working…attempt it all with stock OEM sections. Often aftermarket slides and triggers have much too restricted tolerances to work in the P80. So far the Brownells and Gray Ghost (a little limited) have labored in my builds. I’ve read ZEV slides is likely to be also tight. https://bookmarkplaces.com/story18581940/the-smart-trick-of-glock-43-p80-that-nobody-is-discussing