Thanks, glad you like it...
I can build one for you, in the next life perhaps, hehe
too many things to worry about, too many hurdles I can counsel you along the way, but plan everything first, draw it, improve the design in your head and few months later build it.
Marty - i just saw your co2 experiment - looks interesting. i never saw a post regarding it. can you please enlighten me as to what the purpose was? im very interested.