1st you ought to get the jetting fixed. Its worth the effort and time is pretty cheap. Stock reeds are ok, V-force advertise a 5.5 hp increase as an average. PC pipe is best thing to have on that bike IMO. Not sure about that silencer or wrong pipe comment. It shouldn't be wrong. they are usually too different. Worn reeds will make it really hard to jet. You will be chasing rich condition until you get it too lean, so a visual inspection is important. Be sure powervalve is good and working well. As they get worn, carbon and goop tend to fill up the spaces and eventually dragging the moving parts or stopping them altogether. Retarding the timing helped mine rev higher. Check Pro Circuit for jetting recommendations to get you close. Clean Filter, fresh gas, new plug, clean carb, new silencer packing, all are easy, cheap, things to do that help it run better and are noticable. Good Luck
