Hey guys, all is well. Glaze stayed put with no runs, fired deep red as expected without any glaze flaws developing. I'm a happy potter as I've got three back to back Xmas shows starting Saturday and could ill afford to lose a load.
The cones by the way fired deadon 6 with the 7 slightly bent so the 47 minute hold at cone 5 registered a tad over a full cone of heat work. That surprises me as I expected to see the 7 at least half bent if not all the way which would have left me wondering if it approached 8.
When I compare this firing to a cone 5 with 20 minute hold and controlled ramp cool down I can see no real difference. So the extra 20 minutes does not really seem to hurt or benifit with this particular glaze and the entire load was firebrick red. I guess I stayed in the parameters and all and all a pretty sturdy glaze.
Thanks for all the input and encouragement everyone, really appreciated and you all made me relax a bit about it and just wait and see b4 getting too bummed.