Pecan Lodge in Dallas is a don't miss stop on any DFW BBQ tour. The Posse is approaching its eighth anniversary of driving the cities, towns and backroads of Texas in search of great barbecue. Inspired by Texas Monthly magazine's 2008 list of the Best BBQ joints in Texas, our original group of six hit the road in early November 2009. Seven-plus years later, we've made dozens of trips around the state, sharing our stories on this blog and in The Dallas Morning News. Here are a few things we've learned along the way. 1. Do your research: There's no substitute…