I have tanned all my hides this year (about 14). The last 3 I have mounted the hair has slipped. I am using safety acid and salt for the pickle. keeping the pH 1-2 and the salt at about 40%. I flesh and salt the capes for about 12 hours, then rinse and put in the pickle. keep the pickle at 1-2 pH for three days then drain and thin the capes. Put them back in the pickle for another 24 hrs then neutralize the hides and tanning oil on the capes, (using McKenzie Tan) then put the hides in the freezer until I'm ready to mount. I then rinse the tan off the capes, drain and mount. WHAT AM I DOING WRONG! I have done this on all my hides and the last 3 have had major slippage. I researched under tanning on the site and didn't find what I was doing wrong. I read that if I leave them alone until they dry the hair should set, but these are customer capes and I don't want to have to replace the rest of my capes.