DONT! well known fact amongst the track day/racers/gixer owners that the 6 pots have more flex than 4pots!
the problem is tha master cylinder, older bikes lose pumping efficiency, and an upgraded master cylinder is the best youll do....unless youve got the original rubber hoses, ditch these and replace with braided lines and new fluid.

softer race pads take time to warm up, they will be RUBBISH until theyre warm, then they will be better, thats why theres a couple warm up laps on track days, not just to warm the tyres.

have a go on my gsxr next time were out mate, and see the difference (ive got a radial nissin upgrade).

cheers.

jaydee.