[RodB]

Capacitor values are not an exact science. Select replacement values as close to original as possible. Since 630 volt film caps are most abundant as paper wax replacements you'll find that 630 is the most economical. For electrolytics use the closest capacitance value and at least the same voltage. Some parts sellers sell kits with the most common values.

For resistor tolerance, most use 20 percent to replace, I use 10. Pay attention to the wattage and tolerance mark on the resistor or parts list.

I always verify the value of a part with the schematic. The schematic isn't always correct but if someone has replaced parts before you it's a good bet they may be the wrong parts.

You are asking the right questions and there are multiple answers so keep asking.