That really sucks man. I dont see why marlin cant replace your inner since they did go through alloy. Therefor marlin should take a kick in the nuts on the axel and not you. Those are the kinds of things that make good customer service.
Marlin said they would ship a new one today..... But they dont have anymore and don't do business with "The New" Alloy. So they don't have any or plan on getting more soon.