It might be interesting to take alternating shots with the DAS and the new bow, and see if you can feel any increased hand shock when shooting the new bow. It doesn't take much hand shock to inflame the tendons, if a motion like shooting the bow is repeated many times. I had a bad bout with tennis elbow in my bow arm elbow several years ago that I attribute, rightly or wrongly, to a very fine bow I was shooting at the time. Since then, I passed the bow on to a friend, and now he's complaining about pain in his bow arm elbow. (I guess with a friend like me, you don't need any enemies, huh?).
I made the mistake of trying to live with it too long, and it got out of control. Now, whenever anything like that flares up for more than a day or so, I lay off shooting the bow and take Advil until it goes away.