| Had a chain bust on me many years ago. Bunched itself up in front of the front sprocket and punched a hole into the gearbox.
Fortunately it was brand new (just a week old). Initially D.I.D. inidcated that I may have fitted it incorrectly. Once I explained my engineering background (they didn't ask for proof) they agreed that it was probably ok and quickly provided not only a new chain, but also paid up for new crankcases, roadside recovery etc etc. Good on D.I.D. | 
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