I see no problem with someone posting the same question. If one of the 'experts' doesn't want to respond, no problem. I've noticed over the years that there are many who unselfishly answer the questions time and again.
Hardly ever is a question identical to another and if it is, so what. Many times experiences change the way someone would answer a question as in the case of someone who figures out a shortcut or easier way of doing something. If no one asked the same questioin, all that valuable experience would be unavailable. If people feel intimidated to post a question because it might have been asked before, this board will turn from a forum into a club.
Steve