I have a 47 oliver 70 with the single front wheel, it has gotten very hard to turn. We took the pedestal off to try to fix but can't get it apart. Have everything out but the shaft that hooks to the linkage and that is what appears to be stuck. Removed the three bolts from cap and it appears to be stuck to the shaft, broke a piece of it off but can,t move it otherwise. Any help would be greatly appreciated. Would also be in the market for a manual.