I was thoroughly confused for a bit. I thought you had waxed a cam!
As I am still working on my first sucessful cam, I don't know if I'll be much help, but it seems like 64 would be too high. Mine went in to the fridge at 52. I can keep the temperature constant, but I am constantly fiddling with the lid of the aging container to keep a consistent 90% RH. How do you control your humidity?