I followed this procedure and had some success.
Some points:
I used Loctite GO2 Gel adhesive with no trouble.
I completely disasembled my switch to solder the wires. There is a hex screw in the back which adjusts the space between the contacts. I found it was quite critical in its adjustment. A bit like tuning a carburettor! If it is too tight or too loose the switch will not function correctly.
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