I've been at XJT since the 1st XR was delivered, longer actually but that's besides the point. Believe it or not, I had never been or heard of any weight restrictions on the XR. That was until a few months ago. But it took 50 pax, loaded bags w/heavies, a long flight to YYT at Cat 2 mins with 2 alternates, one of which was halfway back to EWR.