Like I said, putting a low-rake fork on your IRO is not going to accomplish that. Another frame will. However, don't forget to consider that one of the reasons you have yet to feel uncomfortable on your RO may be its road-oriented geometry. In the summer I would ride my TK2 about nine miles to the track, race, and then ride back. My body would feel pretty beat up afterwards, which I attribute to the rough riding of a steep-angled short-wheelbase bike. It was good for sprinting, though, but I hate riding that bike anywhere else.