I have a 1972 Eliminator day cruiser, last season the pump failed (bayjet) also causing engine failure (main bearings). Since I have rebuilt the BBC 454 and installed it. I had a Berkeley 12JA rebuilt to replace the Bayjet, now my driveline (1310 I believe) is too long. The distance between PTO and pump shaft is 6.5". How would you suggest fitting this? Shortening the yoke? Splines on the new pump shaft are an inch shorter. Thanks