Hi Neil
At SHRCC I run an Orion (obviously lol) 7.5 in 2wd with the following settings
Punch = 7
Timing = 6
Turbo = 8
Slope = 12
Delay = 0.3
I belive you have recently extrended the track and I haven't had an oppotunity to race on it yet.....this setting was for your original track.
Punch was turned a little more than normal as wanted the punch between the shorter corners.The turbo was turned down from normal set up as it generated too much and was close to wheelies on the high grip straight.
I did though bring in the turbo earlier to get her going quicker
I hope it all makes sense.......and helps