I thought I would post this since I suspect many of you have or will experience this problem and if you read it here you may not have to go through what I did today.
I left work in my usual end of the day rush to get home and was cruising along nicely. Somewhere about 1/4 mile into the run I lost my high end. If I just putted along at 10 to 12 mph it was OK but if I tried to twist the throttle a bit it would cough and sputter producing no power at all. I managed to limp home and once I got off to look found and repaired the problem almost immediately. So name that problem! There's a genuine brass plated attaboy for the first person to post the correct answer.
If it can't be broken I'll find a way!
I'm not lost, I'm exploring!