[stevehertz]

On vintage stuff I allow 20% tolerance on resistors unless there's a good reason to do otherwise. Doesn't make a jot of difference generally. It doesn't take long to check every resistor in a vintage circuit. It's best to refer to the schematic though as there will be a few instances of parallel paths to watch out for. In which case just snip one end of the resistor and re-solder it after checking. For that I use thin, tinned copper wire formed into a narrow tube around some tiny round nosed pliers and then slipped over the two wire ends to be (re)joined, and then fill the tube with solder thus reconnecting the resistor to where it was connected. It looks kinda OEM and works a treat. Better than trying to unsolder and unhook components from turret tags, valve bases etc. You always end up burning or overheating something doing that.