Anyone used it? I got a bottle from Halfords as my CBR 400 RR is ticking over a bit rough and probably needs the carbs cleaned as it has only been run a few times in the last four years and not at all in the last year. as it talks about adding the contents to up to 12 gallons I was thinking about putting half in the CBR400 and the other half in my bbird. Anyone got any thoughts?