C W Burfle posted:Did you try blowing into the opening on the backplate? If the whistle doesn't sound then you have one or more of the following:
Clogged chamber, leaky cover, or obstructed openings
C.W. when I blow in the back nothing happens. I had the backplate off and thoroughly cleaned the chambers. The openings are unobstructed, and after I reattached the backplate I sealed it with Sugru putty cement to eliminate air loss.