Long story short - 900SS that has never run properly in the time I've had it and has been sooting up plugs to the point of them getting wet with petrol and misfiring. The bike as I got it: Termi pipes with baffles inserts in tailpipes AS Uotani ignition box and coils K+N filter with airbox lid fitted inc trunks Mixture screws 3 turns out On carb inspection I discovered dynojet needles (on 4th clip down) and diaphragm springs but still running Mikuni 140 main jets! Also the float heights were 12 and 13mm Bike would start without choke Ah hah! thinks me, the mikuni jets will be the problem. So I ordered the 150 jets from dynojet, removed the airbox lid and exhaust baffles and set up the carbs as per dynojet instructions - needles 4th clip from top and mixture screws 4 turns out. Set the float heights to 14mm. Increased the plug gap to 1mm as I believe I can get off with it with the ignition set up. Test ran the bike for a few miles but the plugs still sooted up, although not to the point of misfiring any more. I've since dropped the needles to the 3rd clip down and set the mixture screws at 2 turns out but it didn't make any difference on the plug colour. I've also inspected the choke for sticking on but it isn't so I've ruled that out. I don't know if the dynojet kit is a stage 1 or stage 2, I see there's one number difference on the needle type - would this make such a difference to the running of the bike? Also the bike feels a bit stumbly and rough sitting at a steady speed but smoother on acceleration, I think the dry clutch rattling maybe makes this feel worse than it is though lol.