CTC-11 Help, Cap question

HV is only about 5KV and plate voltage on 6DQ5 starts at around 330V, drops to 48, then gradually increases and tops out at 118 give or take when the chassis is powered up. The wirewound resistor in series measures 12.75K and it gets extremely hot compared to the others in the set so I'm wondering if it's gone off value and keeping the voltage way down there. (Don't have a schematic yet so this may not even be close.)Input voltage from the HO board is -46V.

The electrolytics test good, but... Again, powering up the set, some of the higher voltage sections top out at around 400-440V and gradually drop to 278 - 330, depending on the section being tested. I know in some applications, a voltage drop of 5-10% is nominal but this seems a little extreme.

I'm using a Fluke 12 to test the caps but know. too, that what tests good may not function satisfactorily under load. Outside of buying an ESR tester, what's your 'foolproof' method of testing electrolytics? In the past, I've just replaced 'em all but this gets a little expensive at 8-12 or more per set. Just keep replacing them and live with it?

Thanks for any help you can give!
Michael