Thank you for all the advise. After looking at my fuel tank (great planes) it seems that it is not setup to handle two clunks so I guess that option is out. The dubro valve looks ok. Is it alright to mount it in the fuselage. The way the aircraft is set up there is a large gap between the firewall and the front of the gas tank. The robart refueler looks interesting also, does anyone else have any experience with this unit? Thanks again.