My 4T65E shiftkit has arrived finally, tiny little box, just came with 2 rubber bands and a bag of springs. Now I want to do this once and do it right, the problem is I have to get it done at a shop and the instruction pamphlet in the shiftkit is saying all kinds of things about replacing hard parts and torque converters, I just want to install the accumulater upgrade, how do I explain this to a regular mechanic. Should I tell then to Lucas and flush? I just dont want to take any chances.