I had the same problem with my Sidis when I first got them. The problem was solved for me by putting Aline insoles in my shoes. The LBS I use recommended them and for me it relieved the problem of pain on long rides. Before the insoles I would be in tears at the end of anything over two hours if I tried walk.
ETA- My LBS has Superfeet in addition to the Aline insoles. You can also find Superfeet at REI and shoe stores. I think the Sidi stock insoles are pretty crummy, IMO. When I went to Alines we also adjusted cleat position and refit my whole bike. I was having knee problems in addition to painful feet. I still think the Alines helped my feet and the bike fit helped my knee.
Last edited by Aggie_Ama; 01-18-2009 at 07:02 PM.
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan