Sean,

I run my air injector valve on my beckett housing at about 75% closed.

I took my valve right off and ran it full open thru the threaded hole. This shows a wide range is acceptable...

Well im pretty sure the beckett isnt upside down, but i first got it i couldnt figure out which wat it went. ill try restricting the air and see what happens.

another though, is your Mag18 used or new?

Steve

Its new.