Another related question: both mains tend to loose air slowly - would
be flat after about 3 months sitting. Is this typical or should I get
new tubes?

Try new valve cores.

Del Rawlins-
+++++++++++++++++++++++

Wish I could go as long as 3 months.

I've been informed that AIRCRAFT tubes
are manufactured from GENUINE RUBBER.....
and are porous by their very nature.

I've also been told Michelin tubes leak the least.
Dunno, but wouldn't bet the farm on this rumor.
They_ARE_ expensive.

Try the valve cores, but chances of BOTH
being the cause of you problem is slim to none.
If it doesn't help, at least it's a cheap education.


Barnyard BOb --
Over 50 years of successful flight...
Eat your heart out, BEN HASS. ---