[TenTec] Jupiter Sticking in Transmit

[doc kd4e]

I am observing a troubling malady with my Jupiter.

from time to time with no pattern I can recognize
it will stick in transmit and the only way I can
get it out of transmit is to power the rig off and
then back on ... makes for weird moments in QSO's
and even more so in Nets!

I am using a generic hand mic as I await the arrival
of a better desk mic but I do not suspect the ptt
switch of sticking.

Anyone seen this before -- suggestions, please?

-- 
73, doc  kd4e
West Central Florida