Good to hear the technique has worked out for you. I've been folling it in the Azo forum for the past month or so. I had previously tired stand and semi-stand development with 4x5 and under, achieving the same excellent results, but could never do anything larger due to not having the proper equipment. I will be trying to duplicate your BTZS tubes soon, so I'll be able to try this with my 8x10 and 5x7 negs. I look forward to see your results in the gallery.