I received two keys when I bought my new to me 08 Burgman. But the second key was just a plain key with no plastic end with the magnetic lock. Thought I would just store the good key and use the plain key. Went well till I went to unlock the seat to access the trunk. Key wouldn't open the seat lock? Put both keys side by side and they are cut the same. Is this normal? Never had a spare key with my other 650 Burgman so never ran into this before.