I never really bothered much with changing tyre pressures on track days as i always used road tyres but now I have AD08R's I am trying to put a bit more effort into making them work on track. What pressures cold/hot are you using on yours?
I start at 26psi cold presssure on a warm day then adjust pressures after sighting laps and each session until running 30psi hot all round.
I think you have it nailed Jamie, 34 would be getting close on standard road tyres like the Michelins. Word around the net is they like a little less pressure than normal road tyres so I have mine set at 32F 30R I think on the R26 and will adjust from there on track as they heat up i.e. starting target the same hot pressures. I have a pyrometer as well so will take that with me next time on track.
I run 30 front 34 rear at tyre hot temp. Once cooled they drop to 21 in the front. I start at 26/30 then keep dropping until they stabilise