A few months back i put in a DTT tc and valve body in my 47re. Two weeks ago while i was home the truck started to not want to shift gears. I have to ride it out to 2500-3000 rpms before it shifts gears, and when it goes into over drive it slams in hard and jolts the whole truck. it only does it when the truck has ran for a while and is warm. Dtt said replace all my sensers on the valve body which im going to next week but this morning my reverse stoped working. Any insite anyone can give me would help. thanks guys .