Some of the components of the fuel system was easy to attach through the inspection hatch as recommended in the manual (i e fuel pump, one way valve, 3-way connection and with hoses and clamps) a procedure that in itselt also orients all screws in the correct direction for later maintenence through the inspection hatch. However, this time like before, I found it hard to connect tubings and the filter that runs in the segment outside the inspection hatch with the top skin in place so that was left open till after the fuel system was connected.