I own a 2015 Heartland Silverado 37’ fifth wheel. The camper has been stored indoors it’s whole life except the last 4 months. Today I went by to check on the Rv and noticed this patch of small holes in the fiberglass siding? Don’t see any bubbling delamination but obviously somthing is going on. Can anyone give me advise on what might have caused this and what to do to remedy? This camper is in like new condition and I’m almost sick about it. Any advise is greatly appreciated.