New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
Thanks Charlie, I will try to get a better idea of how worn it is, I just assumed the bushing would be worn out after all this time.
If I use a timing light it's all over the map.
https://www.google.ca/url?sa=t&source=web&rct=j&url=https://www.hagerty.com/articles-videos/articles/2007/10/03/distributor-rebuilding-tips-from-a-pro&ved=2ahUKEwiahfKf9LTjAhV0HjQIHdFSD24QFjAAegQIBRAB&usg=AOvVaw29_2CwmU5UtHZR9xrwpDtcArticle by Hagerty... mentioning a distributor rebuild Co. and what to look for.
More model specific: http://thisoldtractor.com/moto_guzzi_loopframe_distributor_rebuild.html