Part of the problem may be the use of two support bearings, one way to check could be to loosen one then the other then both and see if it gets better when they "float". Take a look at this page; http://www.borgeson.com/VibrationDamp.htm you'll note they say a vibration damper is required when using a support bearing. I can't tell well enough from your pic angles, but if possible, it could help to remove the universal at the column and replace it with the damper, would give you one less flex point and eliminate the need for the support bearing nearest the firewall.

It's too late for the hardware you have here, but using the splined intermediate shafts rather than the double D type gives you some more options. With the splined ones you can get away with moving the phasing a couple splines that will sometimes eliminate a slight bind.