What about buying a litre of penetrene and submersing the reel in an old marge container and leaving it for a couple of days then get it out and have a gentle play and then submerge again, repeat this until free. Might be slow but it will work and a better option than a repairer taking the brute force approach and saying these bits were broke getting it apart so you are up for all these new bits. Time is on your side but not when someone who is pro at repairs as time is money to them
cheers
blaze