just a thought, but isn't putting a badger M1013 into an AIAX stock basically an AIAX anyways? i can understand if you have either the action or the stock already, but if i was starting from scratch and wanted to go this route, i think i'd just buy an AIAX and call it a day.
I think the inletting issues are because of the square bottom of the M2013 action vs the typical 700 round type action footprint. While there are some gunsmiths that would inlet any stock/chassis for the M2013, i think you'll be hard-pressed to find them fit right out of the box.