I have a 5509 chassis with 2 supy engine 2 mmf cards . The redundant card in slot 2 will not come online and keeps rebooting . i have tried 3 cards all with the same result . If I place the redundant card in slot 1 on its own it comes up OK . All cards are h/w ver 2.4 and s/w version 4.2(1) . Any ideas please ..............