It's been some time but have been quite busy.
Here's the scoop:
Measured voltage from one of my hot leads to frame and got 1/2 the full voltage (60 volts). The same for the other lead to generator frame. Connected a load from one hot lead to frame, voltage went to 0. Used a different multimeter to measure the voltage from hot to frame, no load, and I got 0-1 volts. Repeated this several times to confirm and it was the same. One multimeter measures 1/2 of the voltage the other measures virtually 0. Go figure!
some multimeters have a 10M ohm input impedance and you will read ~10vac simply holding the probes near the ac terminals without even touching them
I typically insert the leads of a 1-200K ohm resistor into the banana jack holes and stuff the probes in there to make these problems go away.