AHHH That's just crazy talk. Auto trannys are easy. I have done many and never had a problem. The # 1 thing to remember is to never dry anything with a towel or cloth. After cleaning parts in solvent, air dry only. Use only transmission assembly lube and no Vaseline. You must have an ATSG manual or equivalent for the particular transmission.... This is your schematic for the job. If you don't have a proper manual for the tranny, DON'T BOTHER trying it. Good luck, and let us know about your success.