Weird
Awhile back, I got the carcass of a red trimmed D50(?). Someone took the motor housing, emtor, and head off, and spray painted it silver. I thought mine was the only one that was like that, weird to see another. Someone also took the original switch off and put a 500 series switch on it.
An impact driver and WD40 really help on the fan housing screws, vice grips can be useful as well.
