David Turnbull
PrestoGP Veteran
i cant say ive noticed changes of grip, ive been on during the day and evening, ive been on when sessions have been changed, my times slowly come down with practise but ive not seen any big jumps, it could be that youve taken it slightly diffrent and now found the line, i think this is more likely as theres not been anyone else with a huge jump in time.