Hey guys I found a 1983 250r on Craigslist it was in a storage locker for years with a locked up rear end. I payed 750.00 for it and he said it was free when he parked it. After I got it home I got the tires moveing. Its still hard to move backwards but rolls forward easier could it just be the brake caliper? And is there any adjustments to back off the pads? I says 4130 chromoly made in usa. On the swing arm. Also does it look like aftermarket rear plastic? Any help would be great!