This is going to be one of the most helpful hints for the "do it yourselfer/wanna save some money" types, like me. I contacted this site a while back and recommend it highly. Very inexpensive...about $10.00, expert info, easy to follow directions, excellent follow through by the professional. Saved me about $200.00.
Try it...just ask your question. You decide whether or not to pay.
http://home-garden.justanswer.com:80/