Hi everyone! My husband & i are new to the camper world (me new to camping altogether) we recently purchased a 5th wheel from Craigslist...thinking it was a steal. No dents, no crinkles, no water stains, no odor (its an 84, so we went in expecting these things) it was in immaculate condition!! So we jumped on it! To give a background we looked at it and bought with 1 1/2 ft snow on ground. When it was delivered to our house the snow was melting. And thats when they appeared! Dozens and dozens of stains. Never any actual water and never damp to the touch, just slightly discolored spots everywhere. At every vent,ac unit,seams, cranks etc. We immediately covered trailer with tarp to prevent further damage. My question is----is this water damage or possible condensation from extreme weather change/conditions? Help! Thanks