intermittant misfire

[sgpwwg]

Hi There I have all the issues you've had I changed coils, caps, plugs and air filter. I cleaned the carbs, tried redex, the lot. My 98 fazer (88,000 miles) would be ok for s few days then misfire and you get one or two cold downpipes. After cleaning the carbs myself I noticed that diaphragm rubbers on the top of the carbs where slack, I replaced them from a set I had as a spare and the bike was back to normal. No misfire, perfect again. Hope this maybe of use.