This is NOT a bias issue - read my original message. If anything, the bias is set too low due to an elevated shunt resistor value or opened shunt resistor. I am fairly confident that is the problem but I have to get back to the bench to determine that for sure. This apparently is a fairly common problem as the shunt resistor is underrated. I was wrong about the 2.7 ohms, not sure where I saw that, 3.3 ohms is the correct shunt value.
Scroll through this presentation and you will see the shunt replacement -
https://www.yumpu.com/en/document/read/43193420/drake-forum-presentation-3-of-3-wb4hfn-home-page
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Doug, WA3DSP
Doug Crompton WA3DSP