We recommend posting a question on one forum only initially. If you do not get a satisfactory answer from that forum and you feel that you have exhausted its possibilities, then of course trying a different forum might help. It is only courteous however, to tell the second forum that you have already asked the question on another forum and then give a precis of the answers you received there, or provide a link to it, along with an explanation of why you are now looking elsewhere.
