Depending on how I look at it, I think I may have actually gotten sort of lucky here. I've never bothered using primer before, I usually just go from clear prep right to the color coats. I've never had a pinhole problem quite like this before either though, must have gotten ahold of some crap covering. Since this model will have yellow wings and tail surfaces I decided to give the Brodak White Primer a try, so I'd have a light colored basecoat for under the yellow. I figured the primer would cover better for a base than white dope, which it definitely did. If I would have done my normal "right to color" routine I'd now have to be fixing the yellow dope which doesn't sand and fill as easily as the primer. In this case, since it's at this primer stage, I think it might be a somewhat easier fix. I haven't had a chance to get back to it yet, but I will very soon and I've got a couple ideas to try. Fingers crossed...