I had 3 red fox, 2 coyote and a bobcat in my pickle solution. Tonight I took them out to neutralize and the hair on the fox was slipping really bad. The coyotes and bobcats are fine. Pickle solution is citric acid and McKenzie safety acid, Ph was 1.5 for 4 days. Neutralized in water and baking soda. Ph never got above 1.5 What would cause this? Something that I did? Pickle solution had 42% salinity. Hides were fleshed and boarded by a local trapper. Rehydrated in 42% salinity and warm water for 2 days until rehydrated.