My Saiga .223 had a raspy gritty trigger pull after the conversion
So these are the steps I took:
Stone the sear engagement surfaces
Polish surfaces to 800 grit
The original bullet guide was not working with the new 10 round mags from KVAR.
A redesign was necessary.
Some engineering of the mag catch was necessary to correct differences in the mag latch boss on the back of the magazine.
To be continued????