If you haven't already done so, it wouldn't hurt to give Axiom a call and see if they have any in stock. They are focusing on the new metal stands (that seems to be where more of the demand is) but might still have some of the FMSs around.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8