Anyone have any idea as to the cause of excessive hum on a sound track, I do use Filmguard and do use it liberally but do clean some of it off, could that be a cause, does the film need drying off more or is it just a stripe problem. Ran my Dracula reel 1 through the Bauer last night and there was a loud hum which I could counter by increasing the tone control but then that made the sound very tinny, any idea's????