There's still something amiss. Today I coated, carded, and recoated 22 sets, all with C.10. I'm currently carding a second time, this is my break. My house is running around 60% humidity, and even so I didn't use the rusting cabinet. Something strange is happening with your efforts.

Ken

I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.