BEST WI/MIDWEST BIKE STORES/FITTERS?

HELP! I'm looking for advice re: bike stores/fitters that specialize in tri. For 3 years, I've been riding a Felt road bike that has been fitted/modified for triathlons. It's a great bike, but...I'm signed up for IM WI, and I'm having trouble staying comfortable on rides over 50 miles. At this point, I don't think it's as much an issue with fitness as it is with position/geometry. But I'd like to know for sure.I'm considering switching over to a tri bike, and I'd like to talk with someone who really knows their stuff. I have a list of the more well-known shops in the midwest, but I'm hoping to hear from athletes with first-hand experience who can give me a personal recommendation (and some advice about whether it makes sense to travel a long distance to find a great shop, even if it means giving up the service perks of going local).I know it's getting late in the game, as far as switching things around, so I'm feeling a bit pressed for time. This will be my first IM, so I'm more interested in fit/comfort than I am in speed. Any information will be much appreciated--thanks!--Nicole