While we're talking about schedules, there are at least two different CCS/FUSA schedules in print, one has May 10-11 at Blackhawk, the other has May 10-11 a double-points weekend at MAM.
MAM has a Porsche club scheduled May 10-11, so I'd suggest not showing up there. ;D
The only schedule I've seen has Blackhawk on May 10-11. I may have missed the earliest version that may have had a MAM date in May.
I just picked up a CCS schedule from the local cycle dealer that has May 10-11 listed as a double-points weekend at MAM. The two CCS racers I spoke to there thought May 10-11 was at MAM. Might be worth another look.