I recently purchased a Ford 641 with a superior loader. The loader is a well built however the cylinders for the bucket are mismatched. What is unusual about the cylinders they are trunnion mounted at the head. The head has a 1" hole on each side. The cylinder sets inside of a U channel. A 1" pin on each side holds the cylinder in place. I have searched numerous cylinder manufactures and cannot find any replacement. One cylinder appears to be original, the other was a home made substitute. can anyone shed some light on this?