so, as i have said before this is first dope job.(brodak p40 arc) going pretty good i think or thought. got 5 coats on silkspan and noticed where the trailing edge joins actual wing silkspan has nice airbubble about size of two quarters. i guess it has shrunk up and pulled loose ? should i leave alone,slice and try to stick back down ? once it's painted it wont be as noticeable but not sure if will cause problem down the road? thanks for patience and input, russ