Re: I think I found the problem but….
Good luck with this and keep after it. It'll feel good having all this esoteric knowledge in your head for a while.
I try to look up all that stuff before going to the parts store. Using your number, should be able to find next size. My NAPA guys still measure belts.
Got several old good running cars here, they live outside. I don't usually walk out to start one that's been sitting for a couple weeks without having a squirt bottle of gasoline in my hand. Takes about 20 seconds to remove the air cleaner and shoot some fuel down the throat. I'd rather do that...
O'Reilly did the Walmart/Dollar General move here in my little town. Came in and built a new store right near our old trusted NAPA to drive him out of business. Our guy was getting old like all of us, so he sold out to some kind of syndicate which has a bunch of NAPA stores.
All young cats...
I remember when the aluminum was totally uncool, figuratively. I just bought about my 4th one, this one for a Ford tractor. They all seemed dirt cheap, and they've each satisfied me completely. Old leaky originals are all stored out in the pile.