I put on a new set of Weichs for the first time about a month ago, and vowed to stop thinking about strings and just play. I have been messing with the bridge a lot moving the action up and down, "experimenting" to find the best position for tone and playability.(It's about 50% lower than when I had had the Ultralights.) Anyway, almost every day, tuning down, tuning up, and yes, I put a lot of graphite on the nut and bridge slots. The strings at the slots look fine, better than the OBLI's ever did. A couple of days ago, on the A string between C# and D, I discovered a small dent that was sharp to the touch but not so that it cut. Maybe another description could have been a crinkle, and it appeared to be only on the front side of the strings. Damn, bad luck, they don't make em like they used to. And the A played fine. This morning, I noodled with the bridge just a little, and then practiced for 30 mins. or so. As I was putting my bass on it's stand, I looked for the dent....and it was gone? Yep, went back to check 3 times and it's gone.Huh? I guess I didn't have to tell such a long-winded story, but I could have asked ...has anyone experienced this? is it because of the frequent loosening and tightening I've been doing? And...will it come back some day?