Commodore has fixed some bugs in Kickstart 3.1 and one of the bug was having more than 4 MB of memory and using PCMCIA slot.
When you have Kickstart 3.1 and want to use PCMCIA slot and more than 4 MB memory then you need to patch: C:LoadModule >NIL: L:cardres.ld.strip REVERSE
It also works with my Blizzard 1220/4 with 8MB Fast RAM, but I can't get it work with my GVP 1208 with 8 MB of Fast RAM.