I have more information concerning bottle Dev. I prepeared several more bottles for firing over a few days. They came out with a lot of streaking and some white crusty spots on the down side. Earilier the bottles were coming out fine. The only difference was the I had let the the Borax solution dry on the the bottles for atleast a day before I fied them. I rinsed the Borax off the remaining bottles. I now let the Borax dry for 1 to 2 hours then fire. I am now back to getting good results. I am not sure just how long the Borax solution can remain on the bottles before firing but I would suggest firing them within a couple hours if possible since this is definitely a factor with Borax.
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