Hi Bugs,

I finally broke down and bought custom orthotics when I decided to train for a marathon. I had terrible shin splints prior to doing that. I did take the insert out of my shoe, and took the orthotic with me to the running store to be fitted for the correct shoe. I am an overpronater too.

The most frustrating part was gradually breaking them in. I would get cramps in my feet as I was adjusting. I started by running 1 mile, then switching to the factory inserts. Then 1.5 miles, etc. It was very tedious and I thought I they would be a waste of money. Once I broke them in, they have been great ever since and i'm shin splint free! Also got rid of some low back issues, that was a bonus.

I certainly cannot tell you if that is what caused your shin splint, but if I were betting gal I would think you did too much too soon. Although you had a nice base, your orthotics completely changed your body mechanics, so it's almost like you have to get a base in your orthotic. The reason the old insert felt good is b/c you are used to that. While breaking mine in, they would feel great when I first put them on, then I would start running and they would start to make my feet ache. I would switch after the prescribed time and it felt good to use the factory insert. Now it feels weird to NOT wear the orthotic.

I really believe they helped me train for my marathon, which I successfully completed

Just my 2 cents...

oh, and good luck!