g'day john,

not into mechanical things either they can need servicing or not work
properly, me i just tap on the side of the tank with my finger
knuckle.

len

snipped
--
happy gardening
'it works for me it could work for you,'

"in the end ya' gotta do what ya' gotta do" but consider others and the environment
http://hub.dataline.net.au/~gardnlen/