I can shift from 1 to 2 when moving, but will not shift higher. Parked in the shop with the engine running I can shift 1-5 with no problem. I have checked the reveerse lever and it seems to be correct. I coulldn';t shift out of 1st yesterday , so I adjusted the clucdh, and that got me 1-2 shift. Any help would be apprediated. It is a long way to a shop!