Hi Everyone, I'm not sure how to describe this, but it happens when turning the tuning machine up to the correct pitch. I re-tune when necessary by always tuning up. I first tune low, pull the string a pull times to get out some tension, and then tune up. This is a new set of paper-wrapped rockabilly strings that were put on for me. I've played on the bass for a couple of hours now, so the strings aren't totally new at this point, and I've retuned it many times. My other upright has jazz strings and I never have this issue. It also stays in tune like a rock. From my electric bass experience, this is usually attributed to the strings getting caught up at the nut. Is that pretty much the diagnosis? And if so, is there a remedy? Thanks!