i received my 2nd E6 before I posted my problem to see if it was me or the engine. When I put the switch in conventional mode or TMCC using either TMCC or cab-1 on my remote, the motor whines nicely on the B unit, smoke good, but the A unit makes a pumping sound (like an IV pump) with no smoke. Resets and re-address on engine had no effect.
Sound like something someone else experienced? Trying to see if worth taking off the shell or sending back to Scott.