I can confirm that both the Mich. Airstops are top notch. We've had
Airstops in our Aztec for several years, they go month after month , even in
the winter, without loosing a single lb of pressure. I just helped install
Goodyear Flight Mate Butyl tubes in a new set of Flight Custom III's on a
Piper Lance, I'll stay in touch with the owners. Desser is good source for
each.
Jim

"RST Engineering" wrote in message
...
I understand there is a new class of inner tubes that do not leak as
severely as the old
"TSO'd crap" natural rubber that we've used since Wilbur put them on the
Flyer.

Anybody got a lead on who has them for relatively few AMUs for common
sizes like 600-6 and so on?

Jim