Your info says your GL is naked- was that recent? Maybe it was in MY head, but it seemed as if the fairing acted like a sail, with the amount of drag it provided, maybe it's the placement, because I don't see that little bit of weight affecting it... but I noticed when I took my fairing off, the bike was WAY snappier, moving and shifting into gears very fast and effortlessly.
After going for a decent ride on it though, I'll still keep my fairing.. LOL