I've had the "long screw" problem too- good call!

I have "hot spot" problems too and ride Sidis, ( great shoes), among others. I replace the stock insoles with insoles that have better arch support-"Superfeet" work well. If I could afford them, I would have some custom footbeds made. The footbeds are not only more comfortable but give you more power by reducing pronation of your foot, the custom beds can just about eliminate ( excessive) pronation entirely. see www.askjeeves.com or other search engine to find explantion of pronation

Ride With Cooler feet
Pat