New Piston Rings, Matching, and Cleaning

so i did all of the above along with new gaskets (didn't even have a head gasket and the exhaust was almost completely blocked by carbon) this is the first time this ped had been taken care of since it was made

now that everything is together and i loobed up the cylinder and piston with some oil and it is making a sort of sandy scraping / sharp slirpping noise a straw makes when you're drink is all gone when i turn the magneto wheel to turn the piston...

it's coming out of the intake manifold and i took the head off to take a look and listen and the noise stops and i dont see nothin...

when i put everything on including spark, except the carb and cover the manifold with my finger there is resistance to me turning the piston at that point...

this is my first ped and i don't wanna start it up and ruin all my money and work can someone just tell me im overreacting/ give me a scapegoat for all my rage and disappointment when i seize the engine

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