The only aftermarket trigger that I have ever heard of is a custom made unit sold by Carl Kenyon, who for many years built custom triggers for benchrest shooters. Sounds like the sear engagement is too small to keep it cocked. I wonder if the 'smith messed with the sear engagement any? On the repro 52's, pull weight is adjustable, as well as overtravel, but unlike the original 52's, there is no adjustment screw on the sear engagement, just a solid block pinned into position. The only way to adjust engagment would be to file on this block or add a shim to it vary the depth. With the Micro Motion Trigger, engagement is pretty shallow to start with, and won't allow much reduction before it refuses to hold the rifle cocked. If the pull weight has been adjusted down below one pound it would possibly put less spring tension on the sear surfaces, making the problem worse. One last idea, maybe some oil has gotten into the trigger and gummed it or is too slick, you might try something like Gun Scrubber spray or some other type of cleaner degreasser to remove the oil from the sears and see if will hold. The old Micro Motion design is a true multi lever trigger, usually one of the best feeling most creep free triggers around. <img src="/ubbthreads/images/graemlins/confused.gif" alt="" />
