So we have been experimenting with brake pads and settled in on our winner for the Z/28.
" As the G Lock pads kept wearing and becoming more "intimate" with the rotor, they were much better. Front stretch braking between the 3&4 was too soon but I'm pretty conservative. I could have easily started at the 3 marker and had room to spare. After almost 300 miles and a string of 2:11s, I finally put together a 2:10.5 with a virtual best of 2:09.4. I will be in touch soon about the alignment."
Stephen F.
These pads appear to be easier on the rotorZ as well. All our pads are ordered pre-burnished to reduce the bedding required. You can read more here.
http://www.jpssonline.com/#/jpss-brake-pads/