You can grind a 15/16th socket down to fit that special nut.
If I have to order parts, I always replace the little orings because they guide oil and of course the gasket. If you grease the heck out of the gasket, you can usually reuse it a couple of times and it doesn't get stuck to the cases.
All those springs usually get reused without an issue unless it's really beat up and tired.
I have an 85 110 in pieces here if you need any parts......
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country