[Histonet] why

[Santana, Diane]

Hi 
I am looking for some ideas to help with a problem I am still having with
processing my GI bx's. What would cause my tissue to be raw? Not all, not
some, only 1 or 2 pieces. 
Example if I have a case with 4 bx's, maybe only 1 is raw, the other 3 are
beautiful. All my solutions test at the right % and temperatures are fine. 
Question again, why does 1 piece of tissue come out raw, when the other
pieces are fine?
thanks in advance,
Diane Santana
PMA
Haverhill, Mass.