Just to add to this, apparently Kawasaki say that the percentage of bikes that suffer with brake fade does not meet thier requirements to authorise a recall.MrZX10, the current models (apparently not everyone) have a problem that the brake lever start to get very "mushy" when riding hard on the brakes for about 5 laps on a fairly tight circuit, you can pull the lever right up to the bar.
The guys here by us do a mod to the master cylinder at the lever, and they reckon that in most cases that solve the problem, although some have continued to experience this problem.
The only other alternative is to fit the NISSIN calipers from the ZX14. Apparently they fit 100% (About $250-300 each) (Brembo's $1000+)
We have just had our mod done to the master cylinder, and are going to do another trackday this sunday. Will let you know if the problem is solved.