So i know now that best is to have TWO FSM: the right and the wrong ! I have the two '57 Chrysler/ Imperial FSM: US (only for Chrysler/Imperial) and the three canadian books of 57-59 MoPar. The US version says (page 319): .. " When installing check valve make definitely sure rear pump check valve (with metering hole) is positioned toward outside of regulator valve body". The canadian version says (Vol III page 18-212): .."When installing check valve make definitely sure that the bleed orifice is inward toward the front pump cavity". As said Don the canadian is wrong ! There was also other wrong text about torsion bars installation. I don't remember what i did on my car !! What could happen if i did the wrong assy ? At this time the trans. works well except i haven't automatic kickdown when i smash the acc. pedal (i have KD if the car slows). I have also spitting oil from oil gauge tube when the car has been stopped several days. But it's too late, i don't want to remove the trans. and front pump to check.. -- Philippe COURANT (Pau, France) Imperial 57 Crown convertible Buick 58 Roadmaster sedan - American Car Club de France (ACCF) : http://www.accf.com - Chrysler Imperial France : http://www.ifrance.com/c-i-f - Cadillac " Standard of Excellence " : http://www.ifrance.com/accf-cad - SportsCars : http://www.ifrance.com/accf-sprtcar [Non-text portions of this message have been removed]