Im not experiencing any problems so Im not going to mod it; especially if Im not 100% certain what Im doing.
If your flat spot appeared, remember these vehicles do not adjust for mixture changes, fuel etc. Its a simple processing unit; basically a relay set up. Its only going to respond to the matrix it sees. Make sure its not just an enviromental change causing the feel in the bike(change in temp or humidity) then check the gas. Run some seafoam through the gas to clean up the carbs especially if you have to deal w gas w ethanol.
Mids sticking can cause problems while accelerating. I feel mine every so often and I know its from the gas; once I let the gas through it clears up for the rest of the ride/day/etc.