Paul Thompson's team who took a good travelling support, took the lead in the second period through Tom Watkins.
They were pegged back in the 48th minute when Peter Campbell equalised but kept going, with net minder Trevor Koenig making some great stops and in over-time, Jonathan Weaver hit the winner.
Blaze are at home to Edinburgh Capitals on Sunday at the Sky Dome in Croft Road at 6pm.