Another point with the OEM top case from my experience. I personally think that the end user will receive the box with the internal egg shaped cam roller in either the correct position, or an incorrect position right from the factory (this is why the tension on the key is way too stiff with the lock security set screws turned in to recommended torque), or (as in my first go around with it), you'll receive a returned case from another frustrated customer without it first being inspected and reconditioned, and it doesn't work at all.
I also found out that a locksmith cannot do much with it, nor put in a different hook and lock cylinder on it due to the fact that the hole design for the lock is positioned too low for standard and aftermarket hook lengths.
What I ended up doing, is taking it apart, then positioning the egg shaped cam roller sideways with lock mounting plate fully engaged with the notched grooves on the roller, then carefully reinstalling it to case. Once this is done, have someone hold the bottom latch in for securing box to bike fully closed while you turn the lock cylinder mounting plate, using needle nose vise-grip pliers on indent tab (keeping pressure on mounting plate), until it aligns with the indent mark, and the lug holes line up with lock cylinder. What this does, is it correctly positions the egg shaped cam roller so that it is pointing downward against the arm which secures it to the bike.
Now you can put blue lock tight threadlock on the two screws that hold the lock cylinder and mounting plate together, and torque to what is specified.
I know this seems lengthy in description, but it is what I have learned about a very common problem with these top cases, and that's even if they work at all right out-of-the-box.
Since doing this, I have had no troubles with turning key, and it works way better than how I received it new from the factory.
Also, the Yamaha dealer representative suggested to ad graphite to the lock cylinder... Do Not do this if you live in an area that has humidity!
I ordered the OEM top case when I purchased the Super Tenere though the Yamaha year end incentives, which allowed up to $1200 of genuine Yamaha accessories.
Unfortunately, from what I've experienced, their hard cases are a minus to what is an excellent bike.