I have the same problem as you and i think it is due to the fact that i use too much wrist in my shots. i have recently tried to change my forehand and i think its working because I think i am feeling less pain. i have to give it another week or so, to tell you if it really has been working.
I'm in the same boat, I've done 3 things that seem to be helping. In fact I hit my forehand better that ever on Saturday:
1. Bought a left handed mouse. I spend 6-8 hours at a computer so I'm going to let my left side do the mousing from now on.
2. I changed the position of my wrist at the start of the forward stroke. I was leading with the bottom side of my wrist and pronating through the stroke. I changed it to where the wrist is almost straight up and down and the pronation happens way later. Thanks the Fuzzyballs.com for the instruction.
3. I changed from poly to a hybrid. For me, having softer crosses really helps on mis-hits.
Lastly, I'm having the medical team do their thing. Should have the x-ray results soon and then off to PT. I will say that my arm has ached for 10 year from elbow to finger tips, for working at a computer. I hate these things.