Thanks. I'm going to try another CDI I have first. It's going on a first year BW200. It has a CDI that was plagued with problems. I see they might offer a TW200 CDI, that might be close enough to do the job. I read in a cycle test that the 1980 YZ465 CDI was Improved for better starting in 1981. I don't know how true that is. That same improved CDI was used on the 1982 YZ490. My 1980 YZ465 and YZ490 start the same. If you have your act together they start easy, if you don't, you better be ready for some punishment.