FINALLY figured out how I can see Telerik radial gauges in Blend, after they have been wired up with the view models, bindings, program architect magic.
I forgot where I read the small snipped of pure gauge genius - but it suggested removing or moving some Telerik dll's out of your local Program folder and then make sure to relink to the solution's shared dll files.
After a year of frustration - I just looked at the folder and put it on the desktop.
Opened Blend... I SAW MY GAUGES!
Doesn't take much to make for a happy day, now - I have a scrollviewer that refuses to behave.