A few points I've heard of are:
A selection of accelerator cards include logic that Hardware maps the rom to fast memory when Maprom or similar is set; while probably the majority ALLOW software mapping from the ss of the rom to fast ram.
If AmigaOS 3.2.2 soft-maps the rom or patches with an update from DEVS in ss by default then Blizkick is going to conflict or a least be unstable.
NB: your solution isn't working in AmigaOS 3.2.2. but a new install of OS 3.1 which probably wasn't the idea.
