Stanley’s Famous Pit Bar-B-Q, Tyler. (Photo ©Daniel Goncalves) A Posse rule of thumb: The more homemade the sign, the more down home the barbecue. BBQ Signs of our Times is back again, this time with a mix of new and historic photos. This is our sixth blog post on classic BBQ signs. If you happen to see a cool sign while you’re out on the Texas BBQ Trail, please snap a photo and keep us in mind. If you’re a fan of our Texas BBQ Posse Facebook or Twitter page, you can upload a photo for us to include on…