While I was work the McMaster-Carr and Vans shipments arrived. In the Vans order was the new brake reservoir to replace the old one. The original reservoir had a dent in the flange surrounding the hole for the brake lines. (Look at 9/3/2013 and you can see the dent.) There was no way that would sealed properly, so I order a new one. Unfortunately the reservoirs are not the same size and the opening for the brake line connection is slightly lower and slightly to the right (looking forward) of the other reservoir.
The only option was to slowly open the original hole in the firewall. It took more time than I wanted to spend on installing the reservoir. And I ended up with an oversized hole. Fortunately my earlier solution to include a large steel washer on the engine side of the firewall will still work. You can not see it in either photo but it is there. When all the firewall penetrations are completed and I am installing the fiberfrax insulation I will seal all the openings with CS-1900.