Trigger problem

[johns]

Hi all - I've been away from the forum for quite a while . I like the new look.
I hate to admit this, but today was the first time I've had a chance to try out this gun with the parts I exchanged last November.
I have a SAR 4800 that I put the required U.S. made parts into in order to remove the Butthole stock. I've had several problems with the trigger, hammmer, sear and plunger. I bought my parts from DSA last year and have exchanged some, but am still having a problem.
I have to manually push the trigger back out a hair (hear a click) after each shot. I have researched this in the forum, but have not found a fix. I have seen that others seem to have had this same problem, but can't find how they solved it.
I definately do not have the springs mixed up. I have have read that there could be a burr causing the problem. Where exactly do I need to polish the hammer and/or sear. The gun dry fires with no problem. TIA