What's this stuff about apologizing for not being an engineer? I couldn't care less what it says on the framed "sheep skin" over someone's desk or even whether they have one at all. I just appreciate hearing such valuable information from someone who has great knowledge of the topic. Thank you Roman, for sharing your comments. You have nothing to apologize for. Mark Peterson, P.E. >I apologise to the many professional engineers here for my "bucket >science" solutions! I am not an engineer, I'm maybe a "re-engineer"?? > >-Roman -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu