[Hallicrafters] Wrenches to remove knobs from SX 100

[John King]

I need to remove the knobs and front panel from my SX 100. I note that the screws in the large knobs are larger than the screws in the  small knobs. They look like screws that require Bristol wrenches. Is that correct and  is there a recommended source for the correct set?

Does anyone  have suggestions for getting the nuts off the switches and controls on the SX 100 front panel without damaging the front panel? Suggestions appreciated. 73, John, K5PGW