folks with Mediocre skills would have those problems.
And they usually complain about the high price of parts.
I find it really easy to just heat these up with a little map gas bolted to the old cylinder clamped in a vise.
Just heat it up like you're annealing it give a little pull in the direction it needs to go remove from the cylinder and see how it fits.
Sorry if I uncomplicated your complex world there Ralphman