1994 Yamaha VXR minor issues
Hi! About a week ago my friend and I went in on a pair of 1994 yamaha vxr's (his was a vxr pro). When we bought them the guy struggled to turn them over but they eventually did and everything seemed descent accept the oil lines were busted and the hulls were filled with oil. We installed new fuel lines, fuel filters/water separators, spark plugs, and oil pump block off kits and went and ran them the other day. Mine idled like a pro and ran great at 1/2-3/4 throttle, but at full throttle it hesitated. I am trying to figure out what this was from. My guesses were either that the tab on the top of the intake needed to be open, I need to make carb adjustments (or maybe rebuild it), or maybe I am running the wrong mixture (50:1 but a little rich making it closer to 45:1). I don't think adjusting my high speed screw on the carb would change anything because i'm premixing. also, I don't think it's my mixture, because my friend ran the same mixture and he had no issues at top speed.
Also, my friend's struggled idling. We set the idle speed decently high but it still staled a lot. His ski is set up with all the same details i told you (new stuff w/ oil block and premix). Any thoughts on what a bad idle could be?
Sorry to ask so much, Thanks for your help!