Ok, I have a nice eaton fuller shifter knob that I want to replace the round knob from the getrag with. Searching the archives had info for the 2nd gens, but I need to know what the thread size for our getrag is? I guess I need some type of adaptor or threaded sleave for the 13sp knob to fit. Its a bigger thread than the getrag knob, went to Napa, they couldnt help, said one was metric, and didnt carry anything like it. What ya think? BTW, the knobs are very cheap from a local big truck salvage yard, always heard of them being expensive-NOT. tia Bill