Mine would not work in the ignition either, because, the 'shoulder' on the key blank stops the key from going deep enough into the ignition to turn the mechanism. It WILL go deep enough into the seat lock. The seat lock only uses the first inch of the key to unlock. If you look closely at your new key in the ignition, you will notice the key is bumping into the small opening and being kept from getting inserted fully. If you have a grinder, or file, take off enough of the shoulder on the key to allow it to go further into the ignition and chances are, it will work. This picture shows one of mine, after 10 minutes with a file, it is unobstructed by the small opening on the ignition and goes deep enough to turn and start the bike. The other key, the locksmith used a grinder on, to grind down the shoulder of the blank so it would go further into the ignition lock.