Originally Posted by SystemicAnomaly
These sound like real possibilities. Make sure that your grip is not too tight and that your shoulder & arm has a fairly loose, relaxed feeling when serving. I would suspect either a problem with serve mechanics, grip or perhaps a muscle imbalance -- between the triceps and the biceps.
They were realities
I totally agree with everything you said. Fortunately, I fixed my serve motion and have dealt with my brain-cramps and I don't experience 3c/2b pain anymore...