check for rust on the magneto
It is really good that you took the time & made the effort to post a reply and I for one appreciate it when others respond
However before you do so it would be really beneficial is you checked what you are posting was factually correct which what you posted is not .
This gets really really boreing .
But once again for those who were asleep during high school science or went to a school that taught creationism & not science
Rust has ZERO effect on a magneto unless it is thick enough to bridge the air gap which is not a problem either because it will be hydrated at that distance off the steel so will flake off the instant the magnet passes by it
Some rust under the the laminations where the coil sits on the posts can add resistance which can affect the timing chip inside but even that is rare .
The rust that does make a difference is when it gets between the laminations and splays them out which if bad enough will reduce the energy in the spark but to do that they have to be a long way apart .