Opening up a ticket at the BRCA site will only throw it back to me I would imagine to explain it to you like I am doing.
The 10th off road section formulas have nothing to do with the BRCA membership or the number you have or given.
If you want to know what formula you are or you are unsure you can either contact the Chairman of the Off-road section or my self.
tony@rudebits.net
I will happily let you know - need to know full name, address and region raced in...its that simple