I have the spartan setup w/210 tune (i think, been a long time since i programmed), and every now and again when i shift into reverse from drive it seems like it kind of clunks into gear. Never noticed this before until just recently, truck has 45k, and has been babied. I do not race it or pound the S&*t out of it, but i do tow in the summer. Anyone?? Thanks in advance!