Glad to hear that the cam chain adjustment seems to be sorted. I agree that when these bikes are dialed in and you're listening to the sounds of all the mechanical components, it's a thing of beauty, like an orchestra. Many disparate parts working together in a precision concert of motion and action. It's part of the character of these bikes that I find appealing.
Re: the oil filter housing, did you oil up the o-rings before reinstalling? Coat them lightly with some engine oil before re-assembly, this keeps the o-rings from twisting or kinking as you torque things down, just like when installing an automotive spin-on filter.
And no Mickey it never ends, but it does get easier once you've got your restoration work caught up to the decay rate of the bike. Remember you're making up for years of neglect by Previous Owner(s) <shakes fist>. Once you're past the restoratio phase and into the maintenance phase, I'm sure the bike will give you years of reliable service. That's another thing I love about these bikes, treat them right and they're like tanks. Heck look at all the 750's running around with JB weld holding the cases together, and the owners often don't even realize the damage is there until they clean the bike off lol. Lesser bikes would have given up the ghost years ago!
mystic_1