So i tore it down yesterday and what i was feeling in the boot was it vibrating from the axle slipping on the ring gear...

So I plan on Either
1. Welding the ring gear to the axle.
2. Getting a Keyway cut in the axle.
3. Both welding and getting a keyway cut.
4. dishing out 600 to fix it with a new axle and ring gear kit..and then i have to shim it yada..yada

any other ideas?