You could contact the manufacturer directly:

Email: Email us at [email protected].
Please try to include as much information as possible when asking your question.
Also please be sure to list your full email address (ex: [email protected]) as well as at least one other means of daytime contact in your email.

Telephone: 1-217-398-8970. Available Monday-Friday, 8am-5pm U.S. Central Time.

FAX: 1-217-398-7721. Please be sure to include a daytime telephone number or return fax number so that we can contact you.

Regular mail: If you prefer, we can always respond with a regular mailed letter.
Simply write to us, including a brief explanation of your problem or question along with the product name you are referring to:

Coverite Product Support
3002 N. Apollo Drive, Suite #1
Champaign IL 61822