Just wanted to add that I've got the wobbly chuck issue on my brand new DCD790 D2. Initially I suspected a dodgy drill bit, but the same bit in my other drills is fine and displays no off center rotation that the 790 produces. The problem with loose drill bits is not caused by under tightening, it's the effect of the incredibly harsh brake that loosens the chucks grip on smaller bits, unless you ease off the trigger very carefully. It is a fantastic drill in all other respects, but those 2 issues are enough to make me sell it on and buy something else.
