Apologies if this has been beaten into the ground in previous threads. I have recently added a session of practicing with drones to my routine. I have been playing relatively well in tune, but something has been a little "off" for a long time. I have discovered that I had my tuning slide pulled out too far and have been lipping pitches in to tune. It sure is a lot less strenuous playing with the slide in and relaxing a bit. Any of you practice with drones? What kind of exercises do you do with them.