Re: Timney trigger issiues
I'd try to increase the pull weight just a little. Timney's are easy to adjust. If that doesn't work then yeah, send it back for inspection.
Regarding the Jewell, I've only had one on an AR and it was very nice. I now have two Timney's on a couple bolt rifles and no problems with either of them functionally. Had some rust on one after the rifle was in the rain for an entire weekend, but that could almost be expected. Timney cleaned it up, no charge. Do some research and you'll find people who have their Jewells in very dirty conditions start having problems. This problem has many competition shooters no longer favoring the Jewell. The Timney on my match rifle has seen rain (followed by some rust), sleet, and lots of dirt. Again, other than the rust, no problems thus far for over a year. Not trying to knock the Jewell, but it isn't the end all of triggers. Timney may not be either.
Good luck with your problem, hope you get it working again.