I replaced the HV capacitor and made the repairs from trouble shooting the collapsed issue. It is working well now.
However all I can get out of the HV module is 3900-4000 volts. Anybody?
The HV module I'm talking about is the solid state one that is plugged into the 6V6GT (HV Osc.) socket. Then the HV wire from the module plugs into the 1B3GT socket. Pretty neat the way it works. No more HV collapse. Here is a link on the module:
http://www.myvintagetv.com/philco_hv.htm