I've lost track of when or if Honda ever corrected this screw up but I did it a few years back. Never relocated the main ground, but cleaned the paint off the connection points and all that jazz.
Just for grins the other day since I had the tank and seat off I went through them all again. WOW! What a difference. The best word I guess is the bike is crisper. The lights are brighter and everything seems to just work better. It's sort of like defraging your computer.
If you havn't cleaned the grounds in a while, you will like the results if you do.
