RE: Successfully not using a UAT?
I am no turbine expert, but my two most reliable installations - not a single flameout in flight with fuel in the tank - were my CARF Rookie and my O/D jet trainer both of which had home made 2 litre cider bottle fuel tanks with pleated paper pickups (from Mick Reeves) feeding straight to the pump as John Wright described.
My two most troublesome models of late have been my CARF Eurosport and Lightning (both boughtS/H) which have the factory tanks and a UAT. I am not blaming the UAT itself, but they do not cure faults elsewhere in the plumbing. I now wonder if they cure anything at all as, like essyou35, I have seen bubbles in the fuel line cause no problem in testbench running