I just had a transmission put in my 84 Z51. It has been back at the shop because it would not shift into overdrive. That seems to be working now, but I have another question. How hard should it shift thru the gears. It seems to shift ok, but 1st to 2nd seems a little soft. 2nd to 3rd and 3rd to OD shifts like BANG. How do the other 84 autos shift? I am wondering if I still need to take it back to the transmission shop and have them look at it.