Hey Randy,

I used to suffer pain in the back in exactly the same spot as you described and my Doctor told me it was positional arthritis. The cause at that time was playing stacked instruments 6 days a week four hours a night where a lot of the time my arm was extended straight out in front. )This is a common ailment also for painters and decorators)

I then started to use a single master controller for any/all keyboards and made sure my posture was absolutely spot on. This I did by getting a higher stool. I also had to modify my double braced quiklok stand by drilling an extra hole in the circular lock plate in order to set the stand at the ideal position.

Dont suffer - try all of the above - you'll know when you've got it right.

Regards - Keith