The overall volume will suddenly increase because the clone is loaded in the deck with full volume. It should be possible to do so at zero volume - one could argue that zero volume should be the default. Using a crossfader (after ensuring it is assigned correctly each time) is a workaround. A little cumbersome (and "dangerous") especially when I have programmed a MIDI key to clone a track into all stopped decks. Clone is a great feature that I did not expect (thanks) but am hoping it may be simple to have this feature polished. Currently I send my "macro" MIDI keypress via MIDI-Ox to zero the levels of each deck every 10ms for 1000ms but even that sometimes causes volume spikes.