Gentlemen,

I hope someone responds! But questions sometimes do go unanswered. Readers can fail to be motivated to respond on a community-oriented, peer camaraderie, basis when none of the three inquirers has introduced youself, helped anyone else here by responding to an inquiry yourselves, or taken the time to pose your inquiry in a real-world fashion from which the readers could learn something -- but only as an abstract "flash card" type question.

Please don't take offense. We're only telling you that we can't force the readers to answer your question; all we can do is explain, based on our experience and intuition, why we think some particular questions go unanswered. If you can explain who you are and the real-world situation you find yourself in, I'm pretty confident that some responses will be forthcoming. Good luck!

Ted Mooney, P.E.  finishing.com Brick, NJ