I know the feeling. My husband and I moved recently and most of the furniture we bought for the new place, as well as the grill, needed assembly. It can be really frustrating, especially when the drawings/instructions are confusing, which is common. The grill's instructions said: estimated assembly time 15-20 minutes. Who were they kiddding? It took about 2 hours. We put two of the legs on backwards at first, but even without that, it still would have taken probably an hour and 45 minutes. We definitely had some sore muscles after some of the assembly projects, lots of bending and crouching to install parts.
It sounds like it's all starting to come together, though. Hang in there!