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Wild. They seem pretty good still here. I've seen the behavior you describe once or twice, and sometimes it fast wipes for a few times dry (which I don't like.) But except for one time it always settles down shortly and goes back to normal. I had it act up a couple weeks ago and couldn't get it to stop for a few minutes. I forget what I did, I think it was so annoying I turned off autowipers for a while. Day or two later, turned it back on and it seems to be working again.