I acquired and older KM RCM recently and it too only has one tube -- but two holes -- flowing from the solution jar. My hand pump no longer works -- the plunger mechanism goes flat and will not release unless I disconnect it -- but with the next plunge it flattens out again. Another thing I've noticed is that the thread wraps around the side of the spout when vacuuming a record -- the manual mentions (and shows in a picture) the thread looping under the nozzle, but what mine does looks different. How does the thread on your machine respond during vacuum mode?
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