I am a right handed person. But my little and ring finger on the right hand are weaker than my left hand. There is a peculiarity about this. The 5-3 configuration (E-G in C major scale) on my right hand is VERY difficult to achieve. On my left hand I can strike 5-3 finger simultaneously quite comfortably with the 4 being up. This I can't do cleanly on my right hand. I have recurring tendonitis problem (both inside and outside) on my right elbow.
Any suggestion how I can deal with this?