August Smartlock (not pro) 3rd gen to newer Defiant deadbolt adapter

Before buying an August Smartlock on Amazon, I decided to confirm compatibility with my deadbolt. Defiant = Compatible it said. It wasn't.

A quick google search (rather than trusting the August website) brought me to a page on their website that showed newer Defiant models weren't compatible. So I bought a Prusa i3 mk3 (ok, I was looking for any excuse to buy one) and designed and printed an adapter (similar to the ones provide) for this deadbolt. Ok, I haven't refined it yet, dimensions are