I put the grill together myself. 
Did most of it in my home office. I took the frame outside then the burner box. I took the grill cover lid off first. This made it easy to lift. Just two shoulder bolts and nuts. Not hard to put together. Watched golf tournament while doing it. 
All parts were there. Was not damaged. I lined the bottom of the box below the burners with aluminum foil to make clean up easier later on. 
Only problem I had was the first night. Squirrel ate my gas hose up. Had not even used it yet. I order a metal hose and that should fix that problem. Only 12. 
I plan on using tonight but overall I’m very pleased.