I do Salt and resalt , I use Basacrl & salt in my rehydrate
bath , I am using saftee acid in my pickle ph 1.0 to 2.0 ,
I have used Lutan , I am now using E-Z 100 to tan with ph
4.0. Some of my Deer capes not all will have lose hair but my
biggest problem is the hair or fur at back bottom of the ear
butt has a lot of slippage.I do dry my capes before I start
the process ( How Dry ? ).I talked to the taxiderist at WASCO
he told me that after I tan & tumble I can put the capes in the Freezerxer
until ready to mount , this seemed to make my problem worst !
But I do see where Some of the Fur Dressers will do a wet tan
so I don't understand where things are going wrong .
The cape have to drain, it could also be that you are bending the ears down while there are salted allowing fluids to pool. I use a old bread rack to the fluids drain totally away. Plus I dont dry the cape other than tumble it. I feel the problem must be in your process of salting.
It's OK to freeze your tanned and oiled capes - but dont freeze them dripping wet! Do what is called "damp-dry" them first - then freeze them. I like to do it "before" I oil them.
Remove them from the tan, rinse, drain for about 15-20 minutes, then tumble them in sawdust for "5" minutes! Blow them out, then oil them, set them aside for 2-3 hours folded, to soak up the oil - and then either mount them after prepping, or freeze them.
You will find your capes thaw faster, and less "looseness" to the hair. Damp-drying prevents them from laying in water as they thaw. Tanneries do it for wet tanning. They dont send out "dripping wet" capes for a Wet Tan.
As for relaxing a salt dried cape, I simply use a salt brine (2 Lbs. of salt per 1 gallon of water) or our Rittels US-609 relaxer. Usually they relax within 8-12 hours.
I'm a bit unsure of where you may be having a problem, but perhaps this info will give you some ideas to explore.