I decided to first get out the dremel and if that failed, goto plan 2. I put some tape on the outside grating to show where the conflict was - basically between 9 and 12 o'clock if you are looking at the case. I then cut the side of the fan case down about 6mm. I also removed one of the fan screw mounts, and cut two of the arm off. I also trimmed a bit on the clear part of the center of the fan. Anyway, it worked and all is good now. The fan is pretty slow turning so it is still stable with the missing arms. I need to clean up my dremel work a bit, but I'm happy. Let me know if you want pics.
Chris