Sorry to hear this. Very unusual... the only thing that comes to mind is that it was a screw-up during the manufacture process. Supposition on my part, but perhaps there was a lack of supervision/quality control when it was put together. Hope you can get it taken care of under warranty and that there are no further problems.
"Times fun when you're having flies"
2015 Zinger 27RL (TT #5)
Ford F150 FX4 w/max tow pkg
My toy = 2004 Corvette Coupe