I'm running 3 of the cheap Geissele G2S's with lighter trigger springs that run 3.5 lbs and I like them. Had one of them not reset all the time due to a tight pin and the light spring of course. Changed pins and have over 600 rounds fired with no issues.
So yes, sometimes the slightest thing wrong can screw it up. But my problem with Jewell's and 1 in particular, it started out fine but before long, I'd have to add a little more sear.
