Track Idler wheels in different holes ?

[TjCj]

I was installing new rail Scratchers yesterday on my 13 Summit X 154 and noticed the Idler wheels were not in the same holes on the rail from side to side. The right side wheels are in the front set of holes and the left the rear set. My first sled so not sure if that's normal or what ?
Thanks

 

[markoo]

Yup that's normal. Track runs smoother this way

 

[TjCj]

Yup that's normal. Track runs smoother this way

Thanks