it starting acting up many months ago but now it will quit too often , if I wait until it cool down then it will start up , I pull the gas tank and clean it , the gasket in the gas cap went bad and some of it fell into the tank, last month or two the mower hit a piece of wood and broke the blade, the blade tore a hole in the deck, the blade also mess the controls cables up but they were fix, will someone take a guess on the proper way to fix the old mower