I'm not against UV systems but without ordering on line , HV stuff can't be bought at the local hobby shop. i'm running all 5/32 tubing with barbed fittings and yes the 6mm fuel line to the turbine is just about 30" . i'm setting up a DV8R . it's funny because back in the beginning with like the 160-180 class, they all used the regular stuff . even the small ball valves that jetcat provided were really small in dia. look at the solenoid valves they used... all small stuff. just made me wonder how they ran if you really NEED the HV stuff now.