for well over 20 years I've used a guy in the New Forest who's hobby is collecting magnetos. All the mags in his collection have to be fully restored so he acquired all the equipment and taught himself to restore them years ago (and that is about every type of mag you can think of). He never advertises but is well known locally and also by tractor, aviation, car/motorcycle clubs all over. He's not quick! His queue is usually about 6-7 weeks. Email me if you want his contact details. Ron