well he should seal the hole with something, rtv will work but it wont want to come apart very well if needed. thats why i used the P weather stripping, its sticks to the car but will release from the cover (and also take up some of that 1/2")

M-D Building Products 2576 All-Climate Edam Weatherstrip, P Strip, 17 Feet, White - Amazon.com

 

Failure is not an option, so I had no intent of ever removing the cover again.
Besides, a well slid putty knife will help the two pieces part their ways.

 

LOL.

RTV sealant is the plan for me.