So, I just got done a top end rebuild on my 1990 Phazer 480. Also replaced the fuel and oil lines and cleaned the carbs. It runs really rough and barely has the power to take off and when it does it will only do around 70km/h. clutch side plug is good colour and the other side is black and wet. tried adjusting the screws on the top of the carb and that didn't really help. Any ideas?? The sled has been sitting for a few years till now. Cleaned out tank and put new gas in. Thanks, any help would be much appreciated!!