Im having a similar problem on my 99 Durango. I just replaced balljoints, tie-rods, CV half shafts, wheel bearings, rotors, pads, and calipers in preparation for a cross country trip. The brakes were not giving me trouble until I started fu%#& with them! Now they are dragging, not bad though. When I get out after a local trip around town I can tell one side is deff giving off more heat then normal and has the typical heated brake smell, the other side just fine. Also, noticed a lot of brake dust on the left front wheel, none on the right. Next time I take it out it might be the opposite side that drags, its hit or miss! It seems like its never both sides doing it at once though, ether left or right. I have a Master Cylinder on order hopping thats the problem. Am I missing anything here? Any Advice?