Tim, i have no idea what the call will be in August but we are trying hard to have race groups that are as balances as possible with the least number of run groups. the best long term solution may be to move both ITR and ITS to big bore. in May big bore was:
GT1 1
GT2 1
GT3 1
AS 4
ITE 7
T1 0
T2 1
SPO 0
15 cars.
ITS was 1 and ITR was 9
even at lime rock which usually draws big bore car we had only 19 and 10 ITS and 7 ITR