[Amps] Fan for SB220

[JayKay]

A local ham buddy just got back into the hobby after an 8 year hiatus and got a hold of 2 SB220's. He noticed they run hot and he asked the following question...so I figured there are folks out here who might know the answer

"....see how guys like the Harbach fan kit for the SB220? Mine is running hot and LOUD. I oiled the
bearings and cleaned it off of dust, but it's still got to go"

Anyone done this mod?

I recommended a small muffin on top to help extract the hot air for now. I did it on my old 30L1 and it sure cooled it down.

Thanks

Jay
W2IJ