Undulating, I too have taken out the insoles in my shoes but I don't any pain in toes or balls of feet, just blisters on my arches. Although I do wear two pairs of socks (with the orthotics in between). I know it sounds a bit strange but I tried every other combination and that was most comfortable.
Cait, I tried putting the original shoe insoles over the orthotics but it wasn't very comfortable and I thought that it probably defeated the point of having custom-made orthotics if you put another insole over them because they won't fit in quite the same way.
Been to a trailplus marathon training camp this weekend and it's fired me up for the marathon. I've changed my schedule, and am determined to get my hydration, diet, stretching and training just right. Look out London!