Welcome Lee
You are never too old to learn; life is a learning curve from the day we are born 'tll the day we go to the great workshop in the sky, and its always accompanied with 'well, I didn't know that… but now I do', plus another golden oldie, 'why didn't I think of that…
There is a fountain of knowledge on this site from all the members & it's freely given, even for those that have been in the eng. business all their working lives , so if you want to find out anything… don't be afraid, just ask.
George