I haven't tested this out yet but it seems like it should work and it doesn't look really cheesy or backyard mechanic ish.
Just went down to the auto parts store asked for a small diameter piece of vacuum line. since I only asked for about 5 inches of the stuff they let me have it for free. Only other thing needed is some super glue and about 5 mins.
I cut off about 2.5 inches of the line, ran my pocket knife through one side of the vacuum line, put a small amount of superglue on the edge of the dust cover that needed to be covered. Then I slid the sliced piece of vac. line in place