you have not posted alot lately, just wondering. i just read the new ele. in the room, very cool...i will reread till i understand it all...for the most part i understand the info you have have brought to this forum, and the work, wish i still had my job at hughes aircraft company, space and commication division, structural test lab. ya, i broke things...spacecraft, missles, aircraft, stuff. and my chemistry is nonexistent, i do understand machines...so please keep us informed.