Hiya.

I had great luck by using the "freezer method".  
I just put my YYH cel in the freezer for a couple 
of hours, and all 3 of my stuck layers slid right 
off.  

Erm... I personally don't suggest the hairdryer 
method.  I wasn't too successful with it.  I 
managed to melt the paint and have it stick the 
wrong layer.  -.-  I guess if you are really 
careful (and lucky) you can get it to work. 

Take care,

jINx