Just this past month or so the bike suddenly is very difficult to start when hot. Kicked it cold this morning and she started right up. Later in the day, each of 3 hot starts were problems and I had to bump it to get going. Also stalls occationly. (Usually at the worst time like at an intersection or in a water crossing .) Motor has probably 30k and is stock except a Twin Air filter that's been on there for years. Seems to run normal otherwise.