I hit it with the heat gun a little bit and there is definitely still varnish on the exterior. The heat gun also didn't reveal much, if any, oil in the head of the stock unless it was trapped under the glue. As such, the head and wrist is going back in the acetone bath for the next few days. After that, I will try sun and the heat gun again. Dry, rinse, repeat etc. until the desired effect is achieved. Again, thanks for all of the input.