i have an intermitant ignition fault on my zxr750 h1 model i think its the ic ignitor box which i have replaced for a second hand one but no it is sow but more stable on tick over etc, any one know of a common problem with them i have replaed the pick up coil second hand and replaed the ignition leads and caps and checked the coils at a garage who tested them i also metered them and gave the individual instection. any help would be greatly apperciaTED. THE PROBLEM IS WHEN ITS HOT MOSTLY IT GIVES HIgher performace intermitantly some times it cuts out at traffic ;lights and is hard to start and i can feel the bikes performance decreaseing and increasing very gentaly at say a steady 60mph i think its th ignitor box some one sujested may be the battery but it stars fine with the lights on and i have metered it on and off? any ideas please.