Been reading the forum for quite a while but this is my first post. I found around 10 boxes of unopened Ilford ID-11 in my garage that I've had for about 10 years or so. I used to own a camera repair shop and this was left over stock when I closed up the shop. It's been in the garage the whole time but the garage isn't heated and temperature extremes can be anywhere between 30 and 90 degrees F. Would you mix it up and use it? Thanks for any input.