Tieing Single compartment sink to wall

[jmgreen7]

All -
I am installing my single compartment sink with drainboard. I have it leveled side-side/front-back, but the backsplash has a noticeable pitch away from the wall.

https://www.webstaurantstore.com/re...rainboard-23-x-23-x-12-bowl/600S1232324G.html

The company insists that it is not abnormal, which i think is a lie. Anyway, how do you all tie the sink to the wall to keep it stable? I was considering a number of screws through that lip, or a metal channel that sits over top the lip of the backsplash.

Any ideas?

 

[Spartan1979]

I attached a 2x4 to the wall and then drilled through the top of the backsplash and used lag screws.