To allison man. I have a 87 bluebird with 748 trans. The shift to 2nd is slow an 3rd to 4th is slow also. Is this adjustable. Local Detroit said hard to do trail an error. I think otherwise. I live in east TN. Also if linkage adjustment i can do- retired auto -truck repair. Also (Lubrication Engineers) now have a syn. trans fluid. I have used product for a number of years. Your suggestions. Thanks.