Reese Sidewinder Pinbox

The only odd thing is that my trailer sits a little more to one side or the other, depending on which way you turned last. Looking in the mirror I can see that the trailer may follow along a little more on the right or left side. Guess it would be easier to say that it doesn't always return to dead center.

Having just purchased a fifth wheel with a Reese Revolution pin box I don't have a lot of experience with it. However, the trailer should not be able to move side to side unless the wedge has loosened, was improperly installed, or the wrong wedge used. You should have that checked out for your safety. There could be a little play side to side at the pin box and if you can detect that in the mirrors - my hats off to your eyesight.