walt rapp posted:...so I'm back to my original questions - how do I know what to buy and WHERE the heck could I get them?
You're still going to need a digital calipers to get accurate dimensions, but going by your pics it is a standard mini DPST snap switch otherwise, but the arm may be a proprietary build/order or hard to find. Start HERE for a jumping off point.
It may be the trick to use a ST-302 tool or similar to re-form the arms/action bars into position on your malfunctioning units with small gradual adjustments if the actual snap switches are working properly.