At 05:22 AM 7/15/2010 Thursday, Sam Payne wrote:
>tested within range, and ran quietly. But during the test while pumping
>the gas into a glass beaker, I could see a fine, constant stream of pin-
>head sized bubbles coming out of the return hose--I'd guess 10-15 per
>second. I pumped 2 extra liters to check and the stream of bubbles stayed

What do you mean by "return hose?"

Yrs,
d