Another corker. One question though; I was told to put the plug in “ clean & dry, plug & head”.
The procedure was, if the plug was new, clean the threads with a good solvent, good solvents could be bought then, (trichloroethane, carbon tetrachloride etc).
If out for a regap, wire brush, preferably rotary, in a lathe even better. Whilst out poke any lead* deposits off the central insulator, tap the electrode on a vice to close the gap & use a proper regapping tool to open up to the correct value.
Clean the head threads with a bottle brush & solvent until it comes out clean.
Then follow Cobber’s guide.
* for our younger viewers; white lead deposits formed on the plug, pistons & valves. Great fun & not at all dangerous.
M

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