Does anyone know if Lee and Hitech filter holders and adapter rings are interchangeable? I have Hitech filters, but Lee holders are on indefinite back-order right now. If I get a Hitech holder, I will need a lens adapter ring that only Lee makes to connect to my Series 9 system. Before I spend the cash, I would like to know if it will work. It will be cheaper to go this route than have a custom ring made.