I have a Hamilton mantle clock that I picked up for a decent price. It has the Hermle 340-020 with a floating balance. I have the little finger on the balance wheel adjusted all the way it can to try and speed it up, but it's still slow. Any options? I thought I read someplace that it might just be better to get a newer floating balance. Just curious of your thoughts. I have no idea of the service history, and please don't just say "replace the whole movement" as what fun is in that. Thanks!