Engine stuttering around 5k rpm
Afternoon everyone. I’ve got a 2007 vstrom DL650. It sat for a few years with limited riding. Before I started it up I took the old gas out and put new in, and added some sea foam as well. Since I have started riding again around 5k rpm the engine starts to sputter, and I cannot get it above 8k rpm in any gear. It is very consistent with the rpm where it sputters, so I do not believe it is a clogged fuel filter/carb. In neutral, the engine does work properly (it does not stutter at 5k rpm). I did a bunch of trouble shooting and found some possibilities that it could be tps or stva. I took the fairings and tank off, as well as the air box to take a look at the throttle body. When I turn the bike on and I am looking at the carbs the butterfly opens fully and closes (goes through its normal setup procedure). This would lead me to believe that the stva is not stuck. However, when I slowly turn the throttle and then slowly release it back I can see the throttle cable move accurately along with my wrist movement but the butterfly’s both stall and stutter around a quarter turn and will not open fully. This seems to be in line with what I am experiencing when I ride - but I am not very experienced with the strom engine. Is this indicative of a busted Or is that a normal operation for the butterfly?