I picked this old non-running hra 215 sxa for $50 at a garage sale. I had spark, compression but no fuel. I pulled the carb, gave it a good cleaning, re-installed and it started but was WIDE OPEN running. So I bought a China carb and put it on. Starts just fine but as soon as I go anywhere below Rabbit, it shuts down just like if I put it to Stop. Any ideas out there?? New to Hondas!!