I posted a while ago about my Power Major and was advised to split the tractor, and also to pull the PTO to inspect for lost reverse idler bolt. So now I'm in need of some info, please, to several questions so I'll list them to make it easy to respond to each of them (hopefully)

1. I'm on the US side of the pond and I want new seals and gaskets. Where can I shop for them? Do I need to make my own gaskets?
2. Do I have to pull the PTO from the back? My shop manual is poor at giving this info plus the raised PTO bolts are pretty rusted. I'm pretty sure I know the answer to this one but any advice would be appreciated.
3. My hydraulic lift lever leaks from the shaft end O-Ring. Is this something that I can also shop for or do I need to try to match it? It is an odd shaped O-ring. More like an O-Cylinder.
That's it for now. Thanks in advance for the help.
Phil