Hey guys, I have a dilemna I want to throw out there to see if anyone else has experienced it and sorted it. Last night I set up with my 45-200 to do some moon shots, it was huge and bright as, perfect weather for it. Problem is the camera was almost vertical on the tripod and the lens would drop back to 150 within a few seconds of zooming it right out to 200! Was so frustrating, I wanted to tape the damn thing in place at 200! The mechanism is obviously too loose, its very smooth, but this is going to be an issue as I like to take sky shots. Anyone experienced this?? Any way to adjust the lens zoom so its a little tighter??