Quick update guys.
I went and checked this morning and I had to right off half the bud.... fortunatly the way I had harvested and dried I had split the bud into two due to two different Pheno types (a tall one and a short fat one). All the buds in the short fat ones smelled slightly wrong and all had a white(ish) centre, all of the tall ones were fine and smelled rather nice. I had more bud off the fat one, and the fat ones buds seemed to be taking much longer to dry, the tall ones buds are now almost over dry. So my guess is that because the fat one had more buds in the jar the hummidity was greater and mold started.
Fingers crossed that what is left does not develop, I will keep drying it another day or two.
Due to stealth, I have to dry in the grow box, this means when I use the hanging method that I cant grow at the same time, nor keep temps up. Next time I will try this bit of advice from Seraphim;
"I do 3 things to combat light damage and overdrying. 1. I use plant netting to make a pouch that I attach to the side of the grow space at the top. 2. I place buds in brown paper bags then into the pouch to dry 3. I cover the outside of the netting with a mylar sheet/black bag to block direct light."
Sorry Seraphim for quoting you without asking, but can I also ask you to post a pic illustrating as I cant envision point 3?
Thanks all for your help, this has been a good thread, I have seen a few posts asking about moldy dry bud, so I hope some of my pics and experience will be of benefit to others.