I added this part to my blued Series 80 OACP, along with a Wolf factory strength recoil spring. Now the slide locks back premanturely, usually on the next to the last round in the mag. This happens on every mag I shoot. I have tried three different mags, 2 Colt and one Wilsons with the same result. :scratch: My stainless OACP with the standard plug and the Wolf spring did this ONCE in 150 rounds with the new Wilson mag. Logic tells me that the problem is the Clark plug, but others on this forum have posted that this part works well (same with the spring). Any suggestions before I throw this part in the drawer?