working on a glass covered OWIZ-12 , freezer island case, can you suggest where all the condensate heaters should be, around the display glass? any by the glass covers ( glass covers are an add on item if requested, heaters in the mullion rails? which ones?, and if you could be specific that would help, and can we buy the heat on a roll that can be cut to length like drain heater cable? this case has been stripped and I am working on rebuilding it, your comments are appreciated, thanks