If you have a frame with a trigger job and have to send it in for warranty service, it will be returned with new parts and sans trigger job (at least that's the way it was when T/C wasn't Smith & Wesson). I got tired of paying eighty some dollars for a trigger job and bought Mike Bellm's spring kit and now do my own trigger jobs.
Regarding the "recent review of a Contender .30/30;" I would presume it was a G2 and thus has a trigger similar to the Encore. The original Contenders had a much nicer trigger that you really shouldn't have to do anything to.
