Swing and a miss. Placed the plate on the outside of the box where the tubes come through, made it most of the way, had to jiggle them at the bend to push them all the way through, they went, and took the center with them. Epoxy just set now
Having done this several times, I've been there! A tip for you. Clean up the heater cooler pipes down to bare metal with steel wool until you have a shiny surface. A light coat of white grease and those plates will slide over the tubes very easily!!
