I have a RYI2200. There was a leak at the fuel shutoff valve when the engine floods. So, I purchased and installed a new shutoff valve and the fuel lines that connect to the valve. The valve came in pieces but I think I put it together right. While I was there, I took out the main jet and emulsion tube. Both were extremely clean so I just put that back together. I sprayed a little carb cleaner in the needle seat even tough it looked good. I put everything back together and now it’s surging badly. It was running very smoothly before so I can’t figure out what I might have messed up. Any ideas would be appreciated.