one thing i have learned and that is never ......never overlook an unknown issue, could be this could be that ??? what does it start like ??? on the button or a fair few turns 5 , 10 turns to go ?????
Id go with your instinct but never rule out anything when diagnosing issues.......could be ice could be electrical could be fuel could be rider error (sorry no offence) could be the **** up fairies ????? who knows. dig around and if you dont find something dig deeper.... its fustrating but the reward comes from finding the gremlin....
I own a triumph believe me Ive had a few lol