Please enlighten me. What is a "C11?" never heard of that TC model. Post picture when you get the chance.
As far as mold goes... that could be a battle more than you think. If it has food, optimal temperature and moisture it can grow until one or more of these ingredients are abated. You can never really know how little or how far it has grown until you look into it further.
Sold the TC, previous owner of 2 NorthStar pop-ups & 2 Northstar Arrows...still have the truck:
2005 Dodge 3500 SRW, Qcab long bed, NV-6500, diesel, 4WD, Helwig, 9000XL,
Nitto 285/70/17 Terra Grapplers, Honda eu3000Is, custom overload spring perch spacers.