Barry,
R594 being high is because it was too small in wattage. It should be 1W, . R408, R534, R582, R598 and R599 should also be 1W. The 16,500 ohm resistor can be made with two 33,000 ohm 1/2W resistors in parallel. The 8250 ohm resistor can be a CCF60 type. R416 is 1/8W. A 1/2W would be better because it is dissipating almost as much as the resistors is rated in wattage. I always see if resistors are too small in wattage. Having seen many underrated resistors be bad is why I always look and replace those that are too small. On the 50V supplies, it is common to see resistors too small in wattage causing the board to darken and causing the resistor to be bad/open. There are ones on the 15V supplies that also should be raised in wattage, e.g. about 15V across around 1000 ohms. These types should be 1W. I have found that the increase in wattage makes the item better in operation because the resistance drift is lower causing lower noise, drift, etc..
Mark
