On my Reactor 46, I have ofter got "dents" in the covering where the monokote got pressed against something and it made a mark without making a hole. In that case, the hair-drier does a good job of shrinking it out. It also works when used on shrink-tubes for servo connectors, just takes longer. In any case, I dont have too many options before I write to GP so I will try.

Ameyam