Well I been working on it some. Appears that moisture was 95% condensation formed on inside vinyl roof, forming the mold. Small amount of mold around inside edges of panels, inside cabinet. Removed all traces of mold. and wiped down well with tea tree oil. Dryed everything out for a week with fans and dehumidifiers. Recoated with tea tree oil again and reassembled. No other moisture or mold signs anywhere.
Did find one trace of a leak behind a locking device for slide.
Found leak by pressuring up inside of coach with shop vac discharge, & leaf blower attached to windows. Was very careful with amount of positive pressure on coach.( did not want my windshield to land in the yard). Pressured inside to about .05 " of water column. proved guage with a homemade water manometer.
Sprayed entire coach with soap bubbles. No leaks whatsoever in roof seams and joints, except for the slide lock. (This was in the mold area).
Resealed this area with foam rubber.( small place missed in manufacturing). I believe I got it. Now I have a beautiful coach, with a pretty good deal. Thanks to all for the advice, and encouragement. Even the naysayers, never hurts to raise awareness and be extra cautious. Hope the pictures come thru. It was fun..