hello you said you have or had an aerox with the same carb im running a 17.5mm one but once warm it locks out at around 40mph when its cold its rapid I put a 78 jet in and it wouldn't move at all before that it was running a 80 now running 84 do I need to keep going up or ? please could you help or look at the page in newbie tuning many thanks
If when its cold its quick then check either 2 things, the automatic choke isn't working properly or the fuel to air ratio isnt right, are you using the standard airbox?