As many of you know the Rick Ruth PAX index for GS is not kind, giving a smaller street tire adjustment than for other street classes. Our local NWR/SCCA series has responded by using the race tire indexes with a blanket .980 adjustment for all street classes. This helps GS a huge amount. Is everyone else using the unadjusted PAX values or have you fiddled with them too? So far our other series is using the RR indexes but is looking at changing to match NWR/SCCA. It makes a huge difference, at the last NWR event I finished 2nd but would have been 6th with the RR indexes.