I have solved my handlebar vibration issue.
Took three steps.
1. removed bar-end weights. Just the caps. Left the screw/nut inside the handlebar.
This did a significant amount of curing the bar-to-hand slaps that occur over bumpy roads,
but still left a lot of vibration on the handlebar. Long rides were still not comfortable.
2. Added plastic chair-leg caps for aesthetics.
Saw a post about using plastic leg-end caps, found four of them at a Do-it Center hardware store
Worked great. Almost no weight at all to them.
3. Purchased the parts to make a test cross-bar
Purchased hand grip guard mounts for a 1 1/8" handlebar, ...
and a universal, adjustable, cross-bar for a 7/8" handlebar. Replaced the 7/8" end-clamps with the 1 1/8"
end-clamps and mounted it on thehandlbar.
Mounted the cross bar and went for a test ride. Now I feel the same engine vibrations in my hands that I feel in
my legs. The CTX1300 all vibrates as a whole unit. Riding over the ridges/bumps that slapped my hands before
now only vibrates like the food pages. Much more comfortable now.
The only improvement that can see at this time is lenghening the cross bar and mounting it closer to the grips.