I want to help out CTRprelude with the tune …. And yes it is very very fragile which I understandIf it's the CAN cable, It's hard enough to get it installed the first time around, but installing and removing it a couple times certainlyincreases the risk that one of the wires in the wire loom will snap (ask me how I know). Once that CAN cable is installed behind the dash, plan to keep it there until you no longer want a tune.
I didn't do the trans TSB either (I had the earlier VFtune TCM tune and never had any issues) and am just as happy with the new TCM tune.