Since LF-26 engine has fuelinjection, there are need for a good fuel return. Returnlines back to each fueltank are already installed in the wings. I bought an dual Andair fuelselector, FS20-20-D2-BMB, with AN6 connections for all fuelpipes. A new centre control has been fabricated, similar to 6-K-2-2 but without all holes, 6061-T6 and 0,6 mm. Andair valve installed.