[gr8fl4porsche]

If you had a varnished (old gas) carb that you have taken apart - cleaned - put back together and it still doesn't run right, then you did not get it clean enough. Those little carbs have very small holes and one is probably clogged. Take it apart again - clean with xylol - use a strand of very fine wire to poke all the holes and blow everything out with compressed air. Should solve the problem. I clean 2 stroke carbs all the time due to inactivity and old gas. If you clean every hole - some are hard to find - then it should work with no new parts required (except gaskets if they get damaged.