Subject: Re: should I replace my BTH magneto with a Scintilla ( which one?)
I am no specialist in magnetos but you can remagnetize the magnets to bring them up to old strength (that is what I would do) and I think your magneto service workshop should be prepared for this. Here is one company I found on the internet, there are certainly many more:
http://www.brightsparkmagnetos.com/services/index.htm. You see this remagnetizing job on their list and it costs 18GBP. Certainly your magneto service will check the coils and rewind if necessary.