RE: CMP giant scale Zero build
Butchn, I glued the valve and servo box on to the wing, and plan to put the reservoir in the fuse.. That leaves only one connection between the wing and fuse, the fill valve can be placed anywhere on the tank side of the valve. So if you want to put it in the wing put a tee in the supply line between the quick disconnect and the valve. If you want the fill valve in the fuse. Put a tee between the quick disconnect and the reservoir.
I had a plane I inherited that had four air lines between the fuse and wing. What a bear to assemble! I teed the two similar lines on each side of the quick disconnects to reduce from 4 to 2 and that helped a lot.
As for the UP# I have one for a set of spring airs not yet installed. They say it will give me a ability to slow down the gear on the way up. For everything else I use wheel collars over the line just after it comes off the barb on the cylinder (that allows me to adjust the rate at the field with the wing on). If a leak develops there I cut that ½ in.. peace off push the wheel collar on to the tubing and the tubing back on the barb again without removing the wing at the field.
Joe