So I wanna do a deep clean of this insert as we bought and moved in last november but used oil primarily. I read the instruction manual and I need to slide it out and vacuum from the top where it connects to the exhaust. I cannot find any vids of this process. Anyone have a video of this being done? Im assuming it must be pulled out to be deep cleaned. Any tricks of the trade please share, this is my first insert, Ive only had stand alone units in the past