Quick update.
Still making progress. We did a good clean up on the prototype. Took some time and made some very small changes so that it looks good and is a nice fit. Came out great. Side by side you can see the differences between the stock and replacement, but other than side by side you won't notice.
We made a couple of tweaks to the mold (following our changes) to help with a better fit right off the bat. So we now cast a couple of more "trials" and check fit. If they work like they should (please, please, please), we are off to production.
I am pleased with them.