Found some threads that three pole works, use middle pole for power. Bigger concern is newer switches are longer then old ones, need to track down same length switches. thanks
This may not be. I was ASSURED by someone some time ago that they work, but they are different depths, so I don't know. Maybe you could shim it with washers with enough work
In this town, LOL, you can't buy shim washers on a bet, so, like, LOL make 'em yourself