Avenger D700B Extension Holder for Oval Reflector

I bought this because it was the shortest reflector holder I could find, to be used with a compact portable lighting setup. The actual length is 21.5 (the 18.5 is the minimum diameter reflector it will hold). I've used it with 42 reflectors, and it holds them well. Because it does not have a counterweight, it will tip the average light stand. But I use it on a ProMaster LS-CT compact travel light stand which has adjustable legs that can be spread wide, and it is very stable. The problem with 5-in-1 reflectors is the clips are not deep enough to accommodate the zipper of the cover. This can be solved with a clamp attached at one end and the clip attached to the part of the reflector at the gap in the zipper. I put the clamp on the end nearest the light stand, so as not to add more weight at the end of the holder. So I'm still looking for the ideal reflector holder; for me that will be a center mount with deep clips for 5-in-1 reflectors or clamps, that is also around 22 long.