Try this...place a Zona saw blade into the stab slot and cut toward the rear..do top and bottom..
save the piece cut out. Now you can slide the stab from the rear....placing expoxy on the saddle.
top & bottom..slide the stab in, check alignment...pin it, clean up the excess. When the expoxy has set, replace the piece that you cut out..a little touch up and it is done...
Hope this helps