I recently bought a no-start R1000 (247.290003). After making some wiring repairs so it would crank, I installed the new carburetor the PO had purchased for it. Now the mower starts and stays running, but it surges/hunts at all speeds and runs rich. I adjusted the float so the inlet needle closes sooner, but it made no difference. The idle air mix screw has no effect. Removing the air filter has no effect. Any ideas other than chasing down a smaller main jet? It has a #98 jet in it now.