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Mine will do that as well on particularly cold mornings. The only thing I can recommend isn't a solution to the problem once it develops, but rather a mitigation measure. After every hole I drill, I'll pull the auger out of the hole and let it spin for a few seconds in the open air. I find that it sheds most of the water and prevents any significant buildup.
I start another hole but only drill a couple inches this results in a clean dry blade every time.
800 stealth; punching a hole a few inches deep is to dry the bit. remove from hole ,n, put out of way. i put cover on ,n, put in sled. wire