No problem James.(posted 8322 days ago)I'm starting to suspect that the 75mm is the cause. I was under the impression that you would only see fall-off if you did any sort of movements, but I guess that isn't the case; the fact that you can by center grads for the 75mm illustrate that point. Searching on Usenet yields lots of hits on just tihs subject...
I will, however, veryify that it's not the holders that are causing the problem. I'll take a test shot or two of a single-colored object (a wall) and inspect for fall-off.
We'll get there.