The Eon Pro and (the Torno HSI) have the sealed "infini spool" that is intended to be maintenance free. I have not found the secret to disassemble them. They spin extremely free until they dont. I have had luck submerging the whole spool in naptha/lighter fluid for an hour or more. My guess is it's not only salt water but maybe gummed up oil slowing it down as well. Ive tried adding back some ZPI z0 (thin racing) oil and letting it seep in the cracks but its not as free as when you pull it out of the naptha so I submerged it again. I didnt know the boiling trick so that's good to know.