I have a 1990 Polaris Indy 500 that I am having a hell of a time getting the Chain Case off to change the Brake Disc Rotor. I have loosend the brake caliper free from the chaincase housing, took off cover, removed both gears & chain, removed the 3 bolts that hold the chaincase onto the frame/tunnel… I have pushed, pulled, pry'd that SOB in every direction the lower shaft seems to have broken free but the top shaft seems like it is locked on tight! Any suggestions? Is this just a case of having of using elbow grease? which I have been doing the most I thought I could without breaking something… Is this case supposed to just slide off after I have taken the bolts/gears/chain and everyhting off? no need to remove snap ring, bearings or anything? Im ready to set this thing on fire- seriously.