Doing both classes on a 583???
So anyone with a 583 can race in Class A & B, but the 620 riders can only race in Class A?
Is that fair?
I think that if you ride a 583 you race in Class B, and if you ride a 620 you race in Class A.
None of this doing both classes crap.
If you want more tracktime, then enter Sound of Thunder.
Your thoughts?