HevyHauler Useing sticky grease to hold your rollers in plce especially when they are new,withanew shaft and in coolweather works good. Next look for chips on the synchronizer teeth on the2nd 3rd and 4th gears the more chips the more likely to want to jump out of gear. If the gears have ground before that hurts the teeth and the shift collars. next look at dual low and reverse when these are ground in it roughens up teeth that are expensive to chhange. Hopefully you'll havs thin shims totighten-up your end play.it can be worse on trannys that have done a lot of hard work. If you have a well worn counter shaft you can make a short shaft with your chop saw to help hold your rollers in place,then displace it with your new one. GOOD SHIFTING !!
