Well I got some nylex hose fittings ( Thanks Bigrig ) and a bit of food grade water pipe plus a few other bits and pieces and I'm currently fiddling about with them to see what I can come up with.
I have however sorted the breather issue. I was poking around in mitre 10 and found some plastic pipe fittings and came up with whats in the pics. I found a whine bottle cork and put it in my drill press and with a sanding disk in the grinder kind of lathed up a float thingy that the water will push up and block the hole in the top of the breather.The slots in the sides allows air to enter the tank.
Rip'n'Shred -- Yep thinking I should have got the 35psi pump oh well Ill see how this one goes.
Oh yeh that green tap sucks..... The serch continues..