Distance between wheels very close?? Cedar Creek

It may be a non issue. Some friends traded their 09 sprinter tt for a 20012 sprinter, basically the same unit with some updates.
I bought his wheel chocks because the tires were spread too much on the new tt and the block wouldn't expand enough.
On our 5er, I have to tap the block into the tire spacing and then its only part way.
Its just the design I'm guessing and you are probably ok. I would be observant and see if other units are the dame way.