I hate to piggy-back on an old post but I am having the same issue as the above and was wondering whatever came of this post. I have the vertical slack in my swing tongue and I believe this has caused cracks on the bolt side of the connection. I posted about this on BBC but didn’t get any responses. I am worried about only getting this welded but not fixing another issue that may have caused the cracks in the first place. Appreciate any help. 
