Two pendulum mantel clocks, one which just needed cleaning and oiling and the other where the chiming had gone buggerup, on disassembly it turned out to be a bent pin. I was feeling quite pleased with myself until when doing up the last screw, the (last) brass strap that holds the front and back together snapped at the screw hole. Cue multiple attempts to resolve, finishing in some top class bodgery involving a new chunk of brass and a blowtorch.