[Dynafoam]

Mark,

Did you not see my post regarding CFR Combi Tool whistle?

Observe where the trigger valve enters the tube - That air-gap is what causes the whistle. I have constructed a plastic gasket to solve the problem but silicone sealant would also work - just make sure that it is fully set before use.

John.

[mark_roberts]

Thanks John.  I'll try that.

I do use ear protectors but then I cant hear the phone although the radio ones sound interesting.

Mark