Hey, I saw your plee for a CDI module for your 400T I´ve been making them and selling them. There based on the 85 CDI module. Each one is tested before and after potting. I can send you pictures of the test set up on my bike. I can also e-mail the instructions I made for installing the CDI. You need to use an Ohm meter to inspect the health of your stator, thats ,part of the instructions. When you get this, reply to me with your e-mail and I´ll reply with what I said here. ------ Dave