I have had nothing but good experiences with AA and I must say, fast free shipping with low prices makes them the first place I look for just about anything including the tail gate assist I just bought.
This is where I thought it would get sticky.... I got it, put it on and it hits the side of the gate by a good 1/8". I figure I would talk to DZ Tech first before I called AA to return it. DZ tells me that they are getting feedback that about 2% of the 2013's are not fitting right. They feel it is due to beds being miss aligned. Anyway - guy said, I am going to send you a whole new unit that has a drop bracket that lowers the shock location away from the interference at no cost for anything. I told them I didn't buy it from them and they said no matter it is their product and they want to stand behind it!
I was off the phone in 6-7 minutes with a solution on the way.