I have a lesco core aerator with the 4 hp Honda gx120 and it will only run with full choke. I had a hard time getting it running in the first place. It would only run if you sprayed carb cleaner into the intake, so I took off the carb and cleaned it out. When I put it back on, it started right up with full choke, but if I moved it to half choke or open, it would die. Has anyone else had this problem or know what the solution might be. I don't think I have any air leaks as I have tightened the carb onto the engine pretty tightly.