Two tips: Raise the idle speed to 1500 (when warm) and this'll stop it cutting out completely on a closed throttle and put in either Shell Optimax or BP's new Ultimate which won't completely cure it but will make a fair amount of difference. It seems some bikes suffer badly (regardless of where the carb heaters are positioned) and some bikes don't - mine does

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As for Silkoline Pro FST, yes it works pretty well but you have to be a millionaire to use it on a regular basis.
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