I bought this bandsaw used and had it sitting for a good month or longer before I tried it out. When I did, it didn't run at first. I fooled around with turning the pulleys and got it running but it made a terrible sound. Turns out the cover over the fan on the motor was dented and the fan was hitting it. So I need a new fan, but am having a terrible time. Rikon doesn't carry the part and recommended Grainger to me. Grainger said they need the motor model which I don't have and Rikon says several motors were used. Grainger also says that they have no 5 1/2" fans or 5" fans with a hole for a shaft as large as this one. Any ideas on what to try next?