Hopey,

Yes, a lot of orthotics are quite built-up at the heel and bulky, and are all wrong for fell shoes. They stop your feet doing what they need to do on a fell, and they stop the shoe from doing what it needs to do too.

Have you pestered your podiatrist about why you can't run in them with fell shoes? It's a lot of money to find they don't do the job.

One thing about David is he seemed to actively encourage a lot of feedback, and wanted people to be critical (his words) about his orthotics.

Rhiannon