I'd like to get some guidance on some firewood harvested from a friend's property. I took a chance on cutting up some logs which were laying on the ground for a full year and prior to that were standing dead somewhere around six years. When I was cutting it it seemed pretty solid but then again that was when winter was still in full freeze and I think these logs were "slightly frozen solid" if there is such a thing with wood. Anyway, as I'm splitting and stacking various sections I run across some that seem to be a bit "pithy" where I am able to see sections of wood where the cells seem cratered. Is this stuff worth my time to spit and stack and burn? Thanks as always.