I have a 84 200m.The 3 wheeler runs great but when i first start it cold i choke it full and it starts right up then i put it to half immediately and then take off and it seems to miss and backfire like its flooded with the choke off and then all of a sudden it died and wouldnt start pulled plug wet burned it off put it back in ran fine.The plug was new so it wasnt the plug.Are these machines that touchy or what.How should i start this 3 wheeler.Also i have a 82 -185 and 82 -200 and there very touchy also.Should i choke them full or half or what.