Here's what I'm going to say...
I sent Todd an email mentioning the traveling roller and asking his opinion. Todd called me within 20 minutes (my default email signature has my cell phone number.)
Todd is a very knowledgeable man. He went on in length about the engineering that went into the mill, the family of brothers who operate the local machine shop that builds the mills, and the tests that him and his small staff have performed using their mill, as well as the Barley Crusher and Monster Mills. In short, the "wobble" is intentional - it virtually eliminates the possibility of the grain getting stuck (a frequent issue with the BC as I've read elsewhere on this forum.)
I decided to keep the mill, and on it's second use today, obtained 84% efficiency using boil in a bag. That's impressive - I don't care who you are...
I also noticed that the non-driven roller has freed itself - it no-longer sticks.
I'm very pleased with this mill. Todd again apologized for the missing mounting hole - he said he gave the machine shop grief on that, and offered to send me even more free coffee. (By the way, his dark-roast coffee is spectacular - easily on par with Starbucks darker roasts.)
In his own words, Todd wants to design the best homebrewer's mill out there. Is he there yet? I can't say - I don't know as much as he does, I'll say that much for sure. But considering the price, the performance and the customer service, I have nothing to complain about.
Cheers folks.