I just bought a Mitsubishi FCG15 and want to replace the lift cylinder seals. I need to identify the mast number to get the correct kit, but can't find it anywhere. I looked on the driver side at the top and middle, inside the channels, etc., but no luck. I guess it could be covered with 35 years of grease or the many coats of paint. Can anyone offer me some suggestions on this? Thanks in advance.