Since I string for a "tennis center and racquet complex" we happen to have a couple of racquetball courts and thus, racquetball racquets to be strung. Problem is, I've never strung one before and I need to. I have a USRSA stringers digest but I didn't realize the strings go down into the bottom of the handle. How do you string these? Can you just pull the string through the bottom of the handle? When I pull these "handle" strings do I string them over-under or under-over? Should I be able to string it no problem on my Silent Partner Aria? I have some string and a racquetball racquet of my own I'm going to practice on first. Thanks for any answers anyone can provide.