Canoeboy,
I've never tried dehydrating eggs, mainly because powdered eggs are so readily available.  Dehydrating raw eggs is begging for a case of salmonella...dehydrating cooked eggs is a crime against nature.  I have eaten freeze-dried scrambled eggs (e.g. add hot water and eat) and they are horrible.  However, I do condone and am quite proficient at rehydrating powdered eggs.

To produce lump-free reconstituted powedered eggs the key is not to add all the water at once...add only a bit of water and then mix thoroughly to produce a smooth paste free of lumps.  Once the paste is made then continue small additions
of water with mixing until the eggs take on the consistency of well-scrambled raw eggs.  These will fry up as well as fresh eggs (within reason).

Salt and additions of flavor nuggets such as green pepper, onions, meat (bacon, sausage, brat, walleye), cheese, salsa, etc. will hide the fact that you are eating the once-dessicated remains of chicken ova.