Hello, I have a nice CCR 2000 Toro that I was getting ready for winter. I put a new carb, scraper bar, fuel lines and even a key switch ( because the only way it seemed to start was by wiggling the wires). It wouldn’t even sputter. I then put a new ground wire from the switch terminal to the engine cover. Nothing. I tip it forward to examine again, set it back down, and it started right up( without chocking or priming ). WTH !! I shut it off and it would not start. I tipped it forward again on its nose ( auger ) pulled it back and it starts and runs great. Question. What is causing me to have to do this ? It sounds like I’m dumping gas into the combustion chamber because the carburetor isn’t doing it’s job. Any thoughts are appreciated.