Okay, so by the time I finished serving this set of balls, my bicep/tricep felt like they were going to explode, as well as my shoulder having a good amount of pain. I don't know if there's somethign in my technique that is doing it. Also, most of my serves are right into the net. I'd say 75% of them. I hit a few second serves in the mix of these videos (they should be more obvious, I think) but the vast majority is of me trying to get my first serve in and reliable. I've had a hell of a time doing that. Thanks for any advice, it would be *greatly* appreciated as my pain is pretty severe so I can only play once a week or so. If it's doubles, maybe twice Links: http://www.youtube.com/watch?v=-8S0nJGeJGY http://www.youtube.com/watch?v=QISlqcE2lnc One from the side, one from the back. Thanks!