Bike is new to me. I purchased it less than 2 days ago. i knew it would need work, but this stumps me. The bike starts and runs great, when its on the stand in neutral it revs straight through the range. but when under load the bike pulls hard out of the hole but will not rev past 5k. It sputters and practically dies. I have the carbs off as this was my first guess. It has 120 main jets. I have a set of 97.5s I think I'm gonna throw in it as i did a plug chop and the plugs (which where brand new) are black. meaning rich. stock jetting i believe is 90? so i if that goes the right direction and helps get me up in the revs ill check that out. I also found that one of the coil packs(if sitting on the bike looking forward, the one on the left) is cracked straight down the center.
I purchased the Bike from a local used bike dealer who has a plethora of used parts as well. It did not have a side cover or airbox cover, but if i can find one in the plethora of parts(i found a side cover already, need the airbox cover) it'll be tossed in.
So what else should I be looking at if these don't solve the issue?