Re: Sendero SFII Trigger
I also have a Sendero SFII, I put a Timney in and like it about 100% more than I liked the original trigger.
IMO the X-mark triggers are horrible... I could not get a consistent trigger pull weight out of it for the life of me. Fire that X-Mark trigger into the bush as far as you can!!!
A friend of mine has a couple of rifles with Rifle Basix triggers and one with a Jewell. After shooting them all (timney, Rifle Basix, and Jewell) I dont think that you could go wrong with any of them... The RB, and the Timney are about equal, and the Jewell is nicest.
Hope that helps