Hi all, Apologies if a similar question has been asked elsewhere, but I can't find anything. I recently inherited an old mantel clock and I'm trying to get it working properly. It had been allowed to wind down and stored away since at least 2012, possibly longer. I gave it a deep clean and bought a winding key off the internet to get it in working order again. I realised to get the mechanism working I needed to 'kick start' the horizontal circular spinning pendulum (picture attached, the spinning weight is the small silver mechanism at the top left of the main brass mechanism), and this has broadly got the clock working again. The only problem is that it seems to be running slowly, and is losing about 5 minutes per day. I read online somewhere that there are sometimes things that can be turned by a screwdriver to affect the beat of the clock and speed it up or slow it down. The only thing I can think this would be is the small silver thing under the spinning weight on this picture, but the screw is very stiff so I don't want to break anything by forcing it to turn. Would anyone have any idea if this is the correct way to adjust the beat, or if I'm missing something else obvious? Any help would be much appreciated as it has huge sentimental value to me, and my late grandfather who it originally belonged to would be happy to know it is working and in pride of place above the fireplace again. Thanks!