I had a spare deer hide in the freezer from last season so I decided to just make a simple tanned hide to hang somewhere. I cut the head and legs off, did about 90% of the fleshing, put it in the tan with the exact amounts of Krowtan/salt/water. I left it in there for 7 days and repositioned it in the mix everyday just like it said too. When I took it out today, I noticed an odd odor coming from somewhere. It smelled like spoiled meat. When I got it in the sink and started rinsing it, hair began coming out by the hand fulls.....that's when I realized what was smelling bad....the cape. I looked more closely and the cape looked discolored in some places too. It smelled totally rotten. I just threw it on in the garbage. Why did this happen? The cape was well taken care of after the kill.....it was brought straight home and went straight in my freezer and hasn't moved since. The only thing I can think of would be the Krowtann. The bottle I used is about 12-14 months old and the directions on the bottle say to not use if it is more than 6 months old. Is this the cause?...If not, then what? This sucks because every time I start to gain some confidence with taxidermy, something like this happens and it reassures me I am not ready to handle someone else's trophy. I mean, what would be the solution if this had happened with a customers deer? One that was unique and couldn't be replaced....like if it had a double throat patch or something? Thanks!