Te511 cutting out when hot

I know this is old but if you haven't fixed the issue check the wires going to coil pack/spark plug. I had similar intermittent issues on my rally bike, turned out to be a broken wire. The intermittent problem was the wires inside the sheathing that looked ok on the bike. They would separate as the bike heated, allowing the sheathing to stretch and wires to lose contact. The higher the load the more likely it would sputter and die. Bike cooled, wires contacted again and would fire up. Didn't find the problem until it finally broke the sheathing and wire completely.