Speaking of the weight issue. Here`s something so few are aware of.
As you know Convair tried to keep the program alive with the all jet B-60 which ultimately lost out to the B-52. The B-60 had such a bad weight ratio due to the deletion of all aft crew compartments which further increased the likelihood of a " tail tip " In this photo below you can make out the counter weights that were installed on the craft while it was parked while not in use. On the front landing gear you can see the cylinder weights protruding out from the tires very vaughly