Tonight I made up the final dash 4 fuel line to connect to the fuel flow sensor. It was a bit tricky getting my fat hands between the exhaust and intake to replace the grommet in the inter-cylinder baffle, but it's done now. I'll also need to turn up two non-standard stainless 1/4" NPT adapters to suit the dash 4 lines so there are as few aluminium fittings in the fuel system as possible.