Hi all, sorry if this is the wrong area but I really need some help, at TFNation I brought a Brave and after getting him home I noticed strange brown, green dusty gunk in all of his nooks and crannies, I dusted him all over but the stuff didn't move. So Iv been using anti- bacterial wipes and cotton buds but it's incredibly difficult to wipe off and to get to all the areas! So any suggestions as to how I could completely clean him would be great, as my OCD will just not let it go that he's not clean. Let alone I don't even know what this stuff is? Is it mold? I've included some pics so you guys can see what I'm dealing with, some areas I believe I'm going to have unscrew to even get to.