I'd be willing to pay a reasonable sum just for the measurements. I'll get someone somewhere to CNC or lathe or something. My dad is 84 and has a hell of a time getting in. We're using a leather strap looped around the existing grab rail because he's too short to grab the handle. It's far from ideal. I've ordered the leather straps in the OP from Etsy Australia in bourbon brown leather (hoping they are close to the saddle brown package I have in mine) and they've already shipped. I just need a sturdy way to mount it to the slot.