Hi all, thanks very much for the replies.

I have not yet run the engine since cleaning out the regulator, I could'nt find anything in there btw.

After running the engine it holds air pressure ok, but when I drain the tank it draws off bubbly fuel, ie fuel and air (even starting with a full tank. So I was thinking "where is this air comming from". It did'nt used to do this untill I got down to the dregs.