Does it have to be a Sparkfun one? Turnigy do a few different servo testers (as do other manufacturers), but sparkfun come up blank for servo testers.

@Rich ..Thanks for the Turnigy suggestion! and the tester is only 4.49 US
Servo Tester

Thank You Guys. I had gotten one in from China for $2.50. It looked just like the expensive ones I've seen. And, it was brand new. But, I never could figure out how to work it. I thought I would take another look at it before I trashed it. Well, guess what? I figured it out and it works good. I have tested about 20 servos. It is so difficult to use the EZB while it is inside of a robot. It is just not convenient. But, this way I know what works and I know it is continuous rotation or not.

Thank YOU for the Help