I've been stringing tennis racquets for a while now and am comfortable with it. I've never done a racquetball racquet though. Recently, a friend asked me if I could string his. I told him I didn't know but I'd look into it. A couple questions: 1. I use a Mutual Power Titan 7700 (upright, crank with swivel clamps). I am unaware of any special adapters that one can buy from MP specifically for racquetball and/or squash racquets (though I know that some other machines require such adapters). How can I tell if my machine will work for a racquetball racquet? 2. Are there strings specifically for racquetball? Do they use typical nylon/synthetic gut? 3. What major difference are there between strings tennis racquets and stringing racquetball racquets? Does one use the same sort of tie off knot? Any advice appreciated.