Hi all. I was hoping I might get some advice on how to fix a screw up. I have a guitar body that was heavy, so I drilled out some of the wood in the body with a Forstener bit before gluing on the drop top to relieve some weight. Unfortunately I didn’t plan ahead because when I went to shape the arm contour on the top, I managed to go too far and I exposed the hollow inside of the guitar. (The attached picture shows what I mean). I was wondering if anyone has any thoughts on how I might go about repairing it. I guess it would involve gluing in a plug of some kind and then reshaping the arm contour. But I’m. It sure how to go about it. I think it’s too big of a gap to fill with the saw dust and wood glue method. Thoughts??