I dislike having switches and the filler valve mounted externally on the model, but couldn't come up with a location so they're on the outside. The belly pan is easily removed but that space is pretty well filled by the wing. I ended up putting a switch each side of the nosewheel steering hatch, with the air filler next to one of them. They are not directly in the line of fire in the event of a gear up landing, and can't be seen unless you get donw and look for them.
I had some leaks with my retract system initially. There are five tees required, these are supplied in the H9 kit. Most of the leaks are at the plastic tees. I replaced them with Robart metal [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=ROB225]tees[/link] and the system is now practically leak free. Loses a little after sitting a couple hours but will do several cycles per flight with no problem.
Craig.
ORIGINAL: tevans55
Jim-
Have you had any ideas as where you are going to place your battery switch and retract filler valve? By the way, the guys at CJ suggested that I use clear silicon around all the places where wood contacts fiberglass inside the engine nacelles. I tried it and it appears to provide a much better bond than epoxy.
Tim