I would like to know the exact way the reverse boost valve and sleeve go into its bore ,Does the big opening go up or down.The truoble I have is when i put the small opening twords the spring it doesnt go far enough to get the snap ring in groove.But when i pu the big opening twords the srping it fits good.I have a haynes manual it shows the small opening twords the spring and the large part of the valve sticking out. Its part of a b-m shift kit.I sure need an answer i miss my 1984 chev suburban 4x4.thanks for your time