r42's were the same as 52's except the grates and cages were not chrome. The grate can be built up in the machine. Accell rolls , engine exhaust manifold leaks, chopper or impeller wear, throat chains, final drive couplings that might not have been fixed and so forth. Grain bin bottom is at thin stage depending on crops grown. Check for wiring patches. All items that a little TlC can fix at a price.