Have you welded the swingarm pivot to the frame? If not, you should because over time when the bearings wear / collapse you will have movement there and it will eventually break the rear hardtail somewhere.
If it was me I have taken out the swingarm and just welded in a conventional style hardtail.
Got the rear hoop.and supports in all sleeved 2 and a half inches rear plastic is just resting there. Have the shock mounts to weld on then remove tabs and get her painted. got brand new rings and made my own gaskets. So engine is going to be cleaned and put back together