I've got a walnut stock that I'm trying to fit to a mauser barreled action. The stock was maybe 80% inletted. I've got it mostly fitted right now, though there are still a few contact points I need to address. I've been using a very sooty MAAP flame to smoke the action, and this works well for vertical and nearly vertical surfaces where the friction can rub off some soot; but it's not so great at identifying which horizontal surfaces need work. Any tips?