James,
The focus problem may be due to resistors in and around the focus circuit. They should be raised to 1W types due to the voltage drop across them. These resistors are from B+ to the collectors and from C to B of a few transistors on the h-v board. The part numbers are from Mouser. The 150,000 ohm: 71-CCF60-150K-E3, 180,000 ohm: 279-H4P180KFDA, 332,000 ohm: 71-CCF60-332K-E3, 442,000 ohm: 71-CMF60442K00FEWF (12 week delay) or (2) 660-MF1/2CC2213F (in series), 430,000 ohm: 279-H4P430KFZA, 100meg: 708-HVA12FA100M or (measure in mm the hole spacing of the original carbon then select the on that will drop in which will be larger in wattage than original). If yours has the two 39meg 1/4w carbons on the bottom board, use two 594-MBE04140C2005FC1 in series. These will be R710 and R910.
When you finish recapping the unit, use high temp, low ESR and long life types. Make sure to get the polarity and look to see if yours has the incorrect voltage and values of two condensers in the supply. Replace them as you find them. There are resistors in the supply that should be increased in wattage. The two 4,7mfd tantalums likely will test bad. I used 50V film types to replace them. M. Yachad has a kit for these to recap and some resistors that should be replaced.
Mark
