CTC-9 restauration.

[avalon1308]

I am sure lots of you will know the answer. I am restauring a CTC-9. It had a dead FJP in it and I replaced it with an original CYP. The set if fully recap'd and a 63Kohm resistor was added for the second anode(did not have a 56K). When I turned on the set, I had a picture for 2-3 minutes then I guess there was a flash with a little "FRRRT" in the back. Since then, nothing, no picture. Checked everything. All voltages on the neck of the CRT are present and correct, they vary nicely with all controls. The HV is very near 20,000 volts.
The schematics says it should be between 19kv and 21kv(varies from one schematic to another).
This is the first time I play with a CYP. Firstly,I am not sure which one is the second anode. Is it the one in the red area (on top of the first anode connection). Only one think I realized is that the HV varies a lot with the
hor sync control and I don't know if this is normal behavior. Could an inverted connection of the anodes kill the tube.
Thanks a lot for any help.