Sorna Chrono needing tlc...

[redrabbit]

I posted something similar up last year, but cannot find the thread, so apologies for the repeat question..

Are there any recommendations for 'repair by mail' services for simple mechanical watches? My Sorna runs fine when wound and lying on the sideboard but stops when worn and moving about. Someone mentioned before it would be a loose jewel and easily sorted, but before I take it to a high street repairer I thought I'd solicit some advice here first. Any thoughts gratefully received.