Hi Lou! Agree. Factory spec should be close to achievable if all is well in the amplifier. If not, then I'm either loading it wrong, or I'm not matching the exciter to the L-4B properly or there is some other technical issue. As I'm a relative noob to linear amps-having spent more time freshening it up than operating it, I'll keep trying to load into my 2KW fan cooled dummy, following the L-4B manual, and if I can't get 1.0KW CW and 1.2KW PEP or more on SSB, then I'll have to reach out for help. I'm only seeing about 800W out in CW mode with 100W exciter input into a 50 ohm dummy. That said, I didn't hit the tuner button on the 7300 when I was exciting the L-4B-Doug remembered to do that. More test runs to make, hopefully this weekend. My wife walked in to bring me a cup of tea the other night right after I had concluded 800W key down carrier into the dummy for 60 seconds. She said: "It smells like something is burning"...I told her that's the sweet smell of 50 years of ham memories being re-awoken...and yes, it's supposed to smell like that Lou, what technique do you use to calibrate the vernier pointer on the Plate capacitor on the L-4B? Do you use the method mentioned in the manual, or could an antenna analyzer (i.e. AA-600) on the RF input with a dummy on the output be made to perform the task?