I'm posting this for a friend that lives in Mexico & lacks both great mechanics nearby him,funds too, & personally he's not well equipped (knowledge or tools) to solve this problem: His MC has started to be unwilling to rev past ~ 5,000 rpm in 3rd,4th,5th gears. It pulls normal in 1/2nd gears but he describes thus- "its like it hits a wall" when he shifts to higher gears. Downhill doesn't matter. FD seems OK. Had a new clutch job a couple thousand miles back.
Ideas? I'll pass them along... Thanks!