Subject Bike is my 07 KTM chassis/99 K5.
After much work by others/smarter people with a timing light on the bike and it being rotated with a drill motor the timing would jump +/- several degrees randomly. Stator checked out as well as CDI, coil wiring, plug. Turns out a swapped out new magneto fixed it. Again, I had a ton of help from some very great people to get me going.
The strange thing is that the bike ran fine before this issue. I understand that magneto rarely fail but this one sure did. It runs now and is a lot of fun again.
The up side was I learned alot from several good guys thru this process. The failed part is actually being cross sectioned to look at the internals. I will share any data I receive.