The local Honda shop just happened to have a carburettor part I was needing, so I installed it onto my '97 900 SS and attempted to put all my carb expertise to work on adjusting them. My expertise in carburettors extends to lawnmowers, weedeaters and MGBs. I was surprised to find that my carbs looked different from the Ducati shop manual. There are two plugs on each carb which do not have screws inside as I had expected. Is there a special tool, or what? I can't see a way to tune them. I located all the air hoses, drain lines etc. and replaced them. They were just hanging there so I put them where they belong. Now the bike runs differently...not good, once it heats up it starts popping and sputtering and revs up to 3800 rpm and stays there. I may have to do an autopsy. The bike has 7600 miles on it. Don't worry, I LOVE working on it!