>>7258382I was ready to just shut down this idea, but honestly after looking at mine (sorry I don't have budget-blowpipe to experiment further) I think you might have some luck filling in this hollow area right underneath the nosecone with something as simple as air dry clay or something.
Again, I don't know how it would look, but that's about the only thing I could think of without drilling and frankly I don't even see a good place for that.