Gang,
Looking at the figures I posted earlier for the 40m output, they looked high compared to some earlier figures, and I have been unable to match that output or to account for the discrepancy. A more recent measurement matches the 20m and 30m values but the revised 40m output to a 50 ohm load is 2.56W, using Steve's recommended setup procedure, with a 12.0v supply and transmit current of 590mA.
ken - wa4mnt