I bought an older pair of EP jumpers, 72", and they have about a 1000 binding holes drilled in them. First, anyone know at least a ball park distance from back of ski to heal of bindings for placement? Also, I filled all the drill/screw holes with JB weld marine putty epoxy, but am not sure if I hit one of these holes on re-drill that it will hold. Any thoughts on this issues as well? Can I glue a thin metal plate on top of the ski to drill through for the binding screws to bite and take hold?