The beef cheeks stole the show during lunch at LeRoy and Lewis in Austin. All the Argentine reggae on my playlist lately has put me in a very “vibra positiva” state of mind. So do the great beef cheeks at LeRoy and Lewis, the new truck and trailer joint in south Austin. Saturdays, the place serves more traditional smoked meats. We went on Good Friday. No line. What a treat in barbecue crazy ATX! This story of discovery begins early that morning. Posse member Michael Ainsworth messaged me that he was on the road to San Antonio from Dallas. “You…