Why did a bad jet make you think you needed an engine?
i knew nothing about carbs when i started this project.
i took all of my measurements and readings, and symptoms and posted them on this forum and one other.
a response from one of these guys said "you might have blew the engine if you ran out of oil, check the compression"
i checked the compression and it was low.
so i bought a spare engine for a swap.
then i found a competent local bike guy.
he gave me the answer without asking for money to fix it.
i tried to leave it there for him to do and he wouldnt.
so know i owe him work.
and i fixed it for free in 20 minutes.