I have a sears pressure washer model# 580.768310, with a tecumseh 6.25hp # 640276. Engine number is 143.006204, family# YTPXS.1951BB, and D.O.M is 0161 K. its 195cc. Is sears only place for parts? Ive looked everywhere else but cant find a 640276 carb or rebuild kit, coil, and engine gaskets or any other parts really. Any help is greatly appreciated.