I recently went to change out the rear seal on my 2009 bx1850 as it was weeping oil. I just purchased the tractor like this. When removing the rear cover the main pto shaft started to come out with the cover. Now I cannot get that shaft to go back in so the bearings align and the cover can go back on. I have tried moving the pto selector and rotating, I don’t have any diagrams or any other kinda info. Just wondering if anyone has any ideas or situations similar???? Any help be appreciated!