I also had problems, cause I placed my arms wrong on the desk. Then the doctor told me to place the arm (including elbows) on the table aswell and this worked immediately. But I guess you tried that already.
What kind of store was that? I hope you did'nt support and bougth that guitar from them?Did not get the Ibanez after all. The store told me it was pristine when I ordered it. It showed up with worn down frets, chunks taken out of the paint, rust on the pickup poles and bridge, missing switch... It was beat to shit.