I can't say for sure Yen, but I was in your spot last spring/summer after getting my Roubaix, and yes, it took some time to get used to leaning forward. I didn't have the test ride time you did -- didn't have a clue I wasn't absolutely comfortable with the new riding position until I got home and rode for an hour or two. My sales person, knowing that I'd been riding an upright bike so far, told me to take it home and ride a couple of hundred miles before we make any changes to the fit because of that.

Knowing that he'd seen me on the bike and knew what I looked like/should look like, I trusted this advice -- I had ridden a bike or three that really did NOT feel good, right off the curb, and this one felt good to me, given the limited ride I gave it.

I can't say how long it took to get past putting too much weight on my hands, and for a while, the whole idea of using the drops was just, like, you know, impossible! (it was more than the first couple of hundred miles, but considering my weight and fitness level at the time....)

Like you mention, it tooks some serious thought for a while, as well as some extra core strengthening off the bike. The more I rode, the less time I spent thinking about position. When I would realize that something was starting to hurt, I just put myself back in the proper position. I can't say it was obvious when the bike/position was suddenly "natural," but it did happen, and the time it took was worth it!

(I've been off the bike through the winter, and kind of figure I'll have to think about it again for a while, til my body remembers!)

Not necessarily help, but hopefully reassuring?

Karen in Boise