Just bought an EGO power string trimmer today, and I'm eager to get going...however, I cannot get the handle on. I'm not sure if I am missing some parts or what, but there is absolutely no way I can figure out how to get the screws to hold the two pieces together. Is the nut supposed to come off of the screw? I can't get it removed, and the directions don't indicate that it's necessary to do that. I can't even connect them when they are not on the shaft, so they really aren't working at all. I watched the YouTube video, and that doesn't help, either. Can anyone help?? Thanks!!