To clean a set of used and gooped up cylinders, can I just soak them in parts solvent? They are pretty "funked up" and that's probably the best way to clean, but I don't want to disintegrate the powervalves so I thought I'd ask.

Thanks,
Craig
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Craig
MC21 SP Rothmans
MC21 R fake Rothmans - track bike
MC21 SE R9N