First of all, your not gonna get any sympathy here when it comes to TG parts, new or used. We get too many people that come on here to pregnant dog about having an issue with a aftermarket item and it comes out later that they aren't even Marlin's. So, we get a little pissy when that happens. It's like going to Ford and trying to have them fix your problem with a Chevy!!
Here's my ? for you, what type of tranny mount are you using? Solid or factory mounts. Did you readjust the pinion angle? How's the u-joints?
And the more modifications you do the more possibility that you are gonna have to live with more sounds.
And TG stuff is cheaper over Marlin's for a reason.
