is there a discernible difference in the factory piston release springs for the forward/direct drums in a 400?
I'm saying, vaguely that the TH400 FWD/DIR springs are all about the same, yet differ in coil count (length) by a turn. Some are an inch, othrs are 1.2, and Some are 1.3". Not the SAME huhare you saying the 400 has two different length springs?
all the 400's that i have worked on always had same length spring, about 1.3 in length