I'm looking for advice on repairing a total mess-up on my part where I over sanded the primed koverall on my airplane's elevator. I just got too aggressive trying to remove a small paint run and now I'm stuck trying to decide how to best repair. I can feel the weave fibers but can't tell if it went all of the way through. The primer used is Klass Kote # 50.

Thanks in advance.