Firestone2582 Air Helper Spring Kit, Black

i have a 2018 f-150 crew cab, do i use the air spring spacer or not? videos say no, instructions say yes??? which is it???

Will this take the side to side sway out when pulling,i have a 36ft rv with full wieght bars and anti sway bar but she stil likes to sway side to side

My truck is still under warranty. Has anyone had issues with voiding warrant?

I have a 2013 F150. About how much do these bags raise the rear of the truck without a load or tow?