Question:   I recently purchased a dodge cummins with a nv4500 tranny the clutch was weak after doing a couple engine mods so I decided to replace the clutch along with that I decided to upgrade to the bigger input shaft. When setting the end play of the new shaft I took 5th gear apart and went back together fine or so I thought, it no longer will go into 5th after reinstalling the transmission all other gears work fine including reverse except 5th. I have scoured the Internet for a manual before I take it apart to see what's wrong so I know how to put it back together. And have turned up nothing. Do you guys offer a repair/ manual?Answer: Sorry we don’t have a manual for sale. We assume something went wrong with the syncro slider assembly during the reinstallThe slider will go on backwards…. The pointed engagement teeth need to face the rear.For more free technical support give Scott a call toll free 888-824-2012 he can help you.  Need parts see our website.