Which silicone heater? and Board?

[mjf55]

So I've pretty much had it with trying to solder the heat bed,.....

Didn't I see some where that you are a teacher? Not trying to divert you from your current path ( silicone implant , eh, I mean heater ) do you have any friends at school who may be able to solder your current heater ( i.e. shop or electronic teachers )? Just a thought.............