Okay..... I have a MAJOR PROBLEM.... I bought a used bike, the previous owner never lubed the chain adjuster bolts and they now are seized into the swing-arm. They will only turn about a 3/4 turn under EXTREME FORCE. I twisted off a 1/4" drive (my own stupidity) trying to get them to go further. I've been WD40'ing them and turning them in and out as far as they will go. It does not seem to be helping.. much, I've been at it for 1.5 hours! HELP what to I do to get them out??