did the ridgid x2 hammer drill have the same chuck as the x3? ive read that x2's chuck would drop a bit when used as a hammerdrill. and if the x3 is different, is the x3 jacobs chuck good at keeping grip on bits? i wish they had a self tightening chuck like dewalt. that chuck is the best out there and if ridgid had it i would buy the ridgid kit hands down.