Just put the threaded part through the hole in the bracket. The grommet is not gonna fit. Just put it to either side of the hole and you dont need to remove the grommet.
you can do it they dont have to. Just go to your first and click edit and then change the subject line and it will change what it shows. but it has to be your first post not any of the replys. That is how everyone posts updates next to there build threads so people know when there is something new.