CAN I SEE THE VIDEO FOR PAINT PRO CONTRACTOR MODEL AL9015

Actually this could become dangerous. When dry latex paint can char or burn.

Although it could be expensive, I would recommend calling a local heating contractor and have him check it out. If it's near the combustion chamber, it will burn; at very least causing smoke and fumes.

Get a professional opinion.

is it showing any signs of being wet or falling in on itself

Did you put a undercoat on it first .

try web search-Powertools.manualsonline.com

be sure to push both valves with your finger to ensure they are not stuck. If they are not remove the large inlet valve and inspect the diaphram. If it is bulged out then that is your problem