Well this thread has lead me in a completely different direction than I anticipated - but that’s a good thing! I went on a quest yesterday to find a SN and a Hofbrauhaus Oktoberfest / Märzen and was not successful. However, I was able to find a Märzen by Weltenburger Kloster and another by Dinkel Acker - both imports. I thoroughly enjoyed both. However, they didn’t finish as dry as I expected, but they did finish much dryer than the SA Oktoberfest. The WK was much lighter than the American variety whereas the DA was about the same (12-14 srm), but both were very “drinkable” and well balanced as many of you pointed out.
Moving forward, I think I’m going to abandoned my efforts to clone the Sam Adams Oktoberfest and, instead, work on perfecting a Märzen. I believe it’s a much more enjoyable beer and being it’s Sunday in September, I can enjoy several while watching the Bears as opposed to just one or two of the SA variety!