I know what you mean, the GSX R runsamazingly stable no matter what speed you have driving through corners.
That's postive if you could feel that it maked a pronounced improvement right away,ibelieve thatperhaps it would be harder to feel .

 

Yes I also thought that it would be very difficult, next to impossible, to feel a difference during a single trip. The explanation may be that the fork bushings are worn and that the fork doesn’t move as freely as is should without the brace. It could also depend in a previous improper mounting of the front wheel, one should bump the fork before the radial front axle looking screws are fastened and I may have forgotten that. I can feel the difference already when the bike is in the garage; the fork is softer when I try to push the bike with the front brake locked. It is not to soft since though since it has harder fork springs than stock. I believe the more freely moving fork is the reason the bike directlyfeels more comfy.