If you intend on keeping that auto choke system then you are severely limited ! I would suggest you consider discontinuing its use and using a carb with a choke system built in as most already do . Cable or pull choke = easy + avaliblity . most likely you dont even need a bigger carb yet if your still mostly stock . First get pipe and upjet and air filter and upjet , then other mods like variator weights . And so on and so on . The stock carb has some adjustments even with the stock jet , you can move the needle a bit . This carb is good for an easy 40mph reliably . Keep it until you get a kit . Sorry for the long post . My two cents , for what its worth .