Help with CandyBar & Windows Drive icon

I am using candybar 3.1.2 (in leopard) and it recognizes all my mac formatted drives fine. It does not however recognize drives formatted "MS-DOS (FAT32)".

One of my drives I customized by right clicking it and then clicking get info and dropping the icon over the top of it. Now with my other windows drive it gives me the same icon jpeg without an actual preview and insted the two photos with a loupe on it. Any ideas how to fix this? I have tried repeatedly to drop the right icon on top of it in the get info pane. After this fails a few times I occasionally get a firewire disk icon on the desktop, but the preview still ahs a "preview app" looking icon.

I've attached this image: