I just don't understand how to adjust this trans. , it is relatively simple, there are 3 pulleys, one on the engine shaft , one on the trans. , and the 3rd. is a tensioner , when i move the lever which controls the tension to the 5 different settings I can only make the machine move at one speed on the 3rd. notch , one speed thats it the other settings on the control lever wont move the machine. The machine will only attempt to move on the lower settings.