Just to update you, you were exactly right. I started using a PVC watering "wand", more like a mini flood irrigation pipe, I made to soak the base with very slow moving water during the day. I've just been moving the wand around during the day to keep everything happily watered. Growth has been very good since doing this. The burnt vines aren't any better but they arent any worse either and the new growth is taking over the burnt stuff and looking good. Thanks for the help guys!