Just an FYI, the tail tab ends on the ones I recently purchased on the Bay were too short to stay in the liner hole reliably, at least on my old Presidio 5000 auto that I decided needed a tune up out of tinkering curiosity. As soon as I had everything juuuuust about buttoned up, the new omega spring on the side buried under all the precariously tensioned mechanics would slip out… every.effin.time, which then required a complete takedown and restart. After about six tries and much cursing, I put the originals back in without trouble. I might try the Pacific and Sons down the road… when I’m ready to give myself another completely unnecessary headache.
ETA: The Bay no-names fit “ok” with some tweaking in my 710, but I have some Pacific Sons on order to compare.