I have a 95 zx-6. I had the carbs cleaned and synched at the beginning of the summer at school. On my ride back home I noticed that the bike is sluggish around 100 mph, I can hold the throttle half way and maybe after a full mile or two, get up to about 110. Before, I would open the throttle all the way and the bike would give a kick and it was off the races, hitting 140 without a problem. I do not know what the problem is and I am thinking maybe it is in the carbs or in the fuel inline filter addition. Any suggestions on where to start or what to do about it???