Are spacers necessary on Inner Edge in Tahoe/Silverado?

[billforbush]

Are the Whelen-provided spacers necessary when installing an Inner Edge in the Chevy/Silverado. I used them but the bar isn't really level. It is lower in the center so I'm wondering if I should take the spacers out?

I'm not sure what purpose they serve?

Thank you

 

[smokeeatertk28]

did u mount the spacers above or below the headliner??? they go above. The purpose they serve is There is a gap between the headliner and the roof beam so they use it so they get a tight fit between the 2 when u mount the bracket for the inneredge. remove the top center map light / sunglass holder. i think there is 2x #10 torx and you can reach in and place the spacer in alot faster than reaching over the headliner.