Hello, and to BP.net.

The first thing is to check for any husbandry issues.
-What type of enclosures are you using?
-What are the sizes and/or dimensions of the enclosures?
-Are you housing the snakes together in one enclosure?
-What are you using for heat sources?
-How are you controlling the heat sources?
-What are your warm and ambient temperatures?
-What is your humidity?
-What are you using to monitor the temps and humidity?
-What type of hides are you using, and how many?
-Are you feeding mice or rats, and are they live or frozen/thawed?

If you could post a photo, it would help, but is not necessary.