imported post
Yep, don't sound like that there is a reason for any rebuild.
Maybe lack of fuel for several reasons? Vacuum leak? Have you had them Synced?
If it runs good normally to 50 or 65, and idles well, then it sounds like some other problem.
Weak fuel pump, clogged lines or filter, bad vacuum, etc..
Dump some seafoam in the tank and take a 200 mile ride, fill and more seafoam, ride, repeat for about a week.
During this time look for other problems you may have.
Seafoam should clean out the carbs if anything in there.
Sounds like it runs good normally, but a wide open throttle it gets starved for fuel?
That's when the vacuum is lowest and you need the most fuel. So it could be either, but I doubt it's a problem with carbs needing a rebuild.