Pink blossoms and tree 2009

I read your post earlier regarding this issue. I shoot this stuff in medium format and 4x5 and haven't seen the dry down effect you speak of. I'd like to hear about your methods.

Well, I over exposed this image by 1/2 stop and when I pealed it. It looked good but an hour later I noticed it had darken about 1 to 1.5 stops dark. I checked the Fuji website and found a pdf file that says The quality of finished photos will change during storage
if exposed to strong light, high temperatures,
and high humidity. Photos are also affected by exposure
to certain gases. For optimum preservation during
long-term storage, keep photos in a dark, dry and
well-ventilated location away from harmful gases."
Here is the site,www.fujifilm.com/products/instant_photo/pdf/fp_100c_datasheet.pdf