Yes I had a few light primer strikes and failures for the trigger to reset while my Timney 3# trigger was installed not to mention my trigger pins walking out a few times. Then I removed the Timney and did the $10 JP reduced hammer springs/ light hammer mod.

I have since put 850 rounds with 40 grain CCI MM RN using my 200 round drum and a couple of 25 round mags. It has been flawless, O function problems.