Hello jachenbach,
My name is Skip Brolund & I am new to this group. I repair English magnetos & dynamos & specialise in Lucas, BTH, and Miller instruments, but currently have a Magneto France & an American Bosch 4 cylinder mag on the bench in addition to one BTH and about a dozen Lucas bike mags. In addition to rebuilding the magnetos & dynamos, I am a USA distributor for a number of UK vintage motorcycle parts suppliers, and typically have over 200 of said items on Ebay at any given time, but am happy to deal directly with a discount to this group.
One of the unique things that I do in regards to magneto repairs is, I am happy to share my "secrets" with those that want to have a go at their own mag & am happy to supply parts. My advice is free & worth every penny :) ! I only use the Brightspark easycap condensers (capacitors) as they give the end user easy access & I have never had one fail for any of my clients. For those who want to know exactly whats involved, you really cant beat the instructions & photos on the Brightspark website:
http://www.brightsparkmagnetos.com/ I also offer a 3 year warranty on the rebuilds, lifetime warranty if its something I goofed up. I have done work for clients in the USA, Canada, South America, and Malasia. I have sold parts to most countries in the world where English Bikes roam free. Estimates are always free, as is testing.
Happy to answer any questions anyone may have!!
As a side note, and only slightly related, I just acquired a BSA d7 Bantam Super :)