Jay, there should be a red balance dot on the tire where the valve stem
is. You can use this to position the valve stem in the window. The right
air chuck can make things easy (or impossible) too.

Well, I'm thinking of taking Don's advice, and painting a line on the floor
of the hangar...

;-)

Seriously, I don't know if we'd even be able to see a dot. The stupid fancy
pants stick out pretty far, and Mary (or I) will have to stand on our heads
to see the tire sidewall at all.

No, I think the solution (or, at least, an abatement to the problem) is to
put in the newer inner tubes that don't leak.

(WHY am I not surprised to hear that airplanes still use 1940s-era tire
technology?)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"