I had recently put a B&M 700R4 shift improvement kit on my 85. Drives great around town. I love the way the it takes longer to shift, really sounds good during mid range with my "stingers". But I have noticed one problem. Under WOT the shift from 1st into 2nd, is barely noticeable at all. Now again, during cruise time, the shifts are nice and firm. But from a launch under WOT, the rpm's get to about 4500 and decides to shift, but you dont feel it at all, and really takes away from the run. I dont think its slipping, its not giving that - rev then hook up - feeling. This tranny shop I took it to had given me one diagnosis. And they think that maybe the Seperator Plate Gaskets (or Valve Body gaskets) could be off set a little bit. Not allowing the amount of oil flow to reach the spots needed under heavy pressure. Does this sound right, or do you think I could have not done something right to the accumulator, or pressure regulator, or something? Can you guys help me out before I go taking everything apart again?