Jim, there is a shaft that connects to the gear tracks. The shaft is square, large going to the front gear and small to the rear that slips inside the front shaft and held in place by a bolt,washer and selflocking nut. Once you get the shaft split go to the aft gear and find the stub with the 3/4 bolt head.You can adjust the aft end of the room in or out to match the front then reconnect the shaft. Make sure the two shaft bolt holes are aligned before reconnecting them. the bolt will not go back in if not aligned. On my 03 Monterey the Bend boys disconnected the room, squared all the track drive gears, then mounted the room using new holes, spacers, etc. Been good since 04. Good luck!