You’ll figure it out.
Do it yourself, don’t trust anyone else’s rebuilds.
Sounds like you learned that now. So many folks smash shit together then wonder why it only lasts 100mi.
And #2 rule
If you look up hobbit engine rebuild or something like that on MA ( select “ ALL DATES”) there’s so much info here. Read read read. That’s key. That’s how I learned everything I did (edited)