This is really something that we didn't have to think about in the past. So many of the new cabs are made from such a lightweight wood, held together by glue, certainly not like the heavy cabs from just a few years ago. It's not just the lightweight NEO drivers that make these cabs lighter anymore. I remember 200+ pound guys sitting on their cabs, or putting them on carts and stacking lots of heavy gear on top. I'm not sure that I'd feel comfortable doing that today. Do you ever worry that putting another heavy cab on top of your newer lightweight cab will crush it, break it, etc? Are there any precautions that you take with your lighter cabs? I think with the thinner lightweight wood being used, it's something to think about. Ever consider it, or am I worrying about it needlessly?