Paul:

Sorry to hear about your prediciment and losing your edge. I had a S9151 strip too on rudder (AW 29% Edge) - I replaced it with a S9350 digital (139oz/.12s) that's exactly the same size and metal geared, and it is working out great. A S9451 digital is the same size too and rated at 120oz/.10s, also w/metal gears. Hope this helps. Maybe you could ask the place you purchased them if you could return the unopened ones or maybe exchange them for 9350/9451's.

Good luck!