Is the "voltage about 2-2.2 volts" being measured across the stock common cathode resistor value of 15.6Ω?
If so, check for around NEGATIVE 32 volts at Pin 5 of all four output tubes, all should be approximately the same. If that's incorrect, check the voltage at various points along the bias circuit. You are looking for something around NEGATIVE 30-40 volts where it goes to the circuit board (eyelets 6 and 21), variable with the setting of the bias pots.
If what you get is NOT NEGATIVE ENOUGH, make sure you put the 10KΩ resistor between lugs 3 and 4 on the terminal strip, and the 15KΩ between lugs 1 and 2 (assuming your wiring is identical to the stock Dynaco shown on the Pictorials available on this site). The other way round on a stock Dynaco Stereo 70 will not provide sufficient bias voltage and won't bring the bias current measurement down low enough.
You DID replace the selenium rectifier with a modern silicon rectifier, didn't you?
If all that is not right, nothing you do elsewhere will fix the problem you report.