My 900 trophy has developed a misfire just off idle. Once it revs past 2000 or so it runs fine. I have done a valve adjustment, new plugs and filter. While I had the carbs off I cleaned and checked everything real well and replaced the worn fuel lines. The bike has always had a problem with the RPM,s falling very slowly when the clutch is pulled in. I doubt there is any connection between the two, but I suspect the stock coils are part of my problem. Starting to have a love-hate relationship with this English beauty. Any advise would be appreciated!