Joe first I'd start with the lubrication. In selling the older Cub Cadets tring to get people to use the hydro's right used to get people who would leave there foot on the brake pedal and try and move the hydro lever which normally depending on the effort bent the linkage. It would be just like your tractor and than we would have to go and adjust the linkage. Might have to do it two or three times before we found out which operator was the one that did it and get them to drive it right. We haven't experienced anything like that on these tractors. On a unit as new as yours it could be the paint that could be causing the unit to bind just enough to do it. Try lubing it up first, than we'll move on. I know it can be frustrating to drive right now but you have a good tractor, just needs a little attention.