Here's something I have read, please tell me if its workable:
Glue four postage stamp-sized pieces of wood (Popsicle stick) to the corners of the inner cover's flat underside. (Or use screws w/ large heads). This makes an air space of approx 1/16 inch between the top edge of the upper hive body and the inner cover.
Will this provide a gentle air flow sufficient to carry off moisture from the underside of the inner cover?
If this 'new' inner cover is install about this time of year, will the bees close this 'crack' with propolis?