Jon

I would re-pipe the tanks to use bigger brass tube and 1/8 tygon and make sure the tube to the clunk and the clunk is also of a good size bore. Use the same for the vents. T the tanks togeather with some T pieces of atleast 1/8 bore and use equal length pipes for both sides. For the pipe between the pump and UAT use a 1/2 inch long piece of 4m pushed on the pump nipple and then push the supplied 6mm tube over that, you will find it is a very good fit but also wire it on. For the pipe between the pump and engine, use a length of 4mm pushed on to the pump nipple (there is enough room with the 6mm on the other nipple) and use a Festo 3-4 reducer to take it to the 3mm engine tube and although your engine has a filter under the cover, another in this line would be good. Don't forget to purge the UAT properly by holding it vertical or you will get bubbles and it may flame out.

Jason