stable lift installation- centering question

Reddog1 yes I had already planned to make the internal sandwhich plates out of aluminim plate for the very reason you suggested. I know for a fact the passenger side I'll have to replace the plywood in the jack area because it has slightly collapsed. I may skip the factory sandwhich of wood/foam/wood and go strictly wood for the strength. The switches I think for now I'll use them but I can see where your modification has merit but for now they work so I'll use them. I do appreciate your feedback it is very helpful.