When building the wheels start on the outside and line up the bead. Make shure the bead seats by itself more or less. Then tighten up the outter bead lock. Then move to the inner ring and work the tire over the foam and make shure its perfectly lined up again. Baja bead locks are a PITA! Let that be known lol.
Also 2 tips. If you plan on bashing hard go to the local hardwear store and pick up some longer screws and nuts for the outter bead locks. The stock screws will pull threw the wheel after time. Also, wrap the rear foams twice over with duct tape. It keeps them from blooning to bad and ripping the tire off the wheel. Hope this helps some what.