In reply to Mattdevaal:
Just throwing this out there, but given the close proximity of a dedicated venue, what reason have you got for assuming it was a DT enthusiast who did this, rather than say, the nutcases who recently trashed the works? I'm not trying to peddle conspiracy theories, but if all you have are tool marks, you can't really speculate on what group of people put them there, given recent events
@***hole thing to do though, whoever did it