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Hi All, I've been working an old, well-used Landeron 48 movement. The chronograph parts aren't installed yet because I'm trying to make sure I'm happy with the performance of the primary timekeeping components before I start layering that stuff onto the bridges. In any event, the watch is running fairly well overall, with around 300 degrees of amplitude and reasonably steady output on the timegrapher, but having done a first quick pass at regulation I've found that the watch wants to run fast and I've had to adjust the regulator to the far reaches of the "slow" range in order to get close to correct timekeeping, as you can see in the photo below. Since this is an older movement the relationship of the regulator and the adjustment arm/indicator is fixed. It may just be my OCD but I'd really like to get the watch to regulate with the adjustment arm+ closer to the center of the range. I've tried loosening the regulator pins, and that helped a bit, but not nearly enough to fully correct the issue. Question: Is there some other technique I should be trying here, or is this just the kind of "old watch stuff" where it's better to shrug and move on? Visually, the hairspring looks great, is concentric and flat, and is pulsing the way you would expect. The beat error is a bit off but not terrible - between 1 and 2ms. Ordinarily I'd let that slide on a watch like this because adjusting it doesn't seem to be worth the risk of repeatedly messing with the balance, but is it possible that's the culprit, or part of it? I could potentially loosen the regulator more, but again I don't want to risk breaking a pin, so it's not something I would attempt without confidence that it's going to make a substantial difference. I can certainly move forward with the watch as is, and the timekeeping performance I can get out of it will be more than acceptable for an ~80 year old watch, but I'd love to tap into the collective wisdom here in case I'm missing something obvious...