Hi, my tractor wouldn't start. I found a broke wire on the ignition switch and fixed it. It cranked but then wouldnt move when i pressed the forward and reverse pedals. I replaced the switch and relays as a precaution because they were old but it still wouldnt move. Now, i cant even get it to crank. It turns over but wont start. I hired a mechanic and he says hes stumped. Any help is much appreciated.