So what I have found out with this problem. The problem is mice have chewed both my grey tanks. No warranty or insurance for rodent damage, I have the underbelly dropped and have ordered a product called Plasti-mend to patch these small holes. I will update how it goes, reviews on other forums seem positive. Also chewed some ducts which required foil tape.
2010 Jayco Eagle Superlite 256 RKS
2008 Dodge Ram 3500 Cummins
66 nights in 2016
61 nights in 2015