Hello, I own a 1976 Case 22 Lawn Tractor that was given to me as a family hand me down. It is in great shape and only needed a few minor repairs to make it run strong. Unfortunately, it stopped moving yesterday afternoon. No forward, no reverse. I checked the hydraulic fluid, and it was at the recommended level. While I was using it last weekend(several hours) I noticed that the motion control level(forward and reverse) would occasionally slip into neutral. I originally thought this was just due to the vibration, but now I think it may have been a sign of problems to come. Does anyone have any trouble shooting advice? One note...the tractor was stored in Florida for the last five years. I was only started once during that time. Thanks