I bought a cheap vito resonite clarinet from ebay to try repadding it. It's in lovely condition, apart from perished foam pads and the biggie... The top of one of the toneholes has broken off. Any ideas what I can use to build it up with? I thought of epoxy, but filled with something, needs to be black. Otherwise I'd use the waterweld that I have. Material also needs to be drillable/cuttable.