I figured it out. It's runs great now.
Just keep in mind that those engines aren't really the greatest choice unless it is all you have.
Those models have relatively weak connecting rods and the valve seats come off the block. But if it works, hey, keep using it.
I've rebuilt those engines a long time ago when they were still being produced and although they are easy to work on, you really got to keep a close eye on the oil levels.
Even a slightly low oil level can make the engine destroy itself. But as long as you keep the engine clean and the fluids topped up, you should be fine.