Hi
The hole is in the "roof" of the float-chamber.
All kinds of cleaning agents including ordinary household cleaner, brake-cleaner, carbcleaner, and
I make my own chemical 'dip' that I really wouldn't advice anyone else to make.
Some parts I blast with the finest glass-blasting material available.
on 2005-Nov-07 19:26:35 Anonymous coward said 
on 2005-Nov-12 12:05:40 lars nielsen said