Fleetwood model 4068... Advice?

[VintagePC]

We have liftoff... REPEAT, WE HAVE LIFTOFF!

I get audio from the speakers using a test CD (has tracks for checking left-right separation, phasing, etc.) and player hooked up to the Phono input. Pots could do with a little cleaning, but that's not an issue unless you're moving them.

High voltage is okay (~280 V across C23 with variac at 95%).

However, I didn't run the set for very long- I checked the other test points and get 17V on the 6AQ5s, and about 0.8V DC on the 6AU6s.

That's well out of the 20% voltage tolerance, but I checked the two 470 ohm resistors on the AQ5s. one was a bit high- 500-something ohms-, and the other within 10%; so that's not the cause (both have 17V on them).

Thoughts?