No problem, I removed the #37310 air outlet and immersed it in isopropyl alcohol for a while. Helped a bit but basically no joy.
So I filled the water reservoir with 2/3 isopropyl alcohol, 1/3 distilled water and looped the hose around to the air intake and ran it for 8 hours. Helped a bit but machine still not usable.
I think the pump itself is full of Willie Nelson.
So then I got a Dewey brass cleaning rod (usually used for cleaning handgun barrels) and a new CM-2 cleaning mop, soaked it with alcohol and ran it in and out of the intake port. Did not help much as far as I can tell.
Basically I am looking at eating the $400 because I'm not willing to sell it on, in this condition. Unless anyone has suggestions? I am willing to do about an hour of assembly/disassembly and cleaning, if there is a reasonable chance it will go back together without too many parts left over.