Anyone whos going to be there, if you have a Nikon F4 could you bring it along? I have one and it doesn't signal my flash (SB-28) to zoom as I zoom the lens. The flash zooms as it should on my F5 though so I know the flash is ok. I'd like to see that it does zoom on an F4 (Nikon claims it should) and then if its ok with you swap your viewfinder onto my body to see if that makes it work. I'm trying to isolate where the problem is. If its the viewfinder then I might buy another one, if its the body well I'll just forget about it...