Hi there. I'm currently trying to clone a 320gb western digital hard drive into a 500gb mdt drive. Windows 7 OS. I've used this dock before, but this particular clone stalls at 80%. The cloning seems to go at a pretty good speed until it gets to 80%...and then just sits there for hours :/ I've tried the cloning of the 320gb drive on to two diff 500gb drives...same results. Although it worked 500gb to 500gb yesterday using another master drive. Any suggestions as to the issue? Thanks! :) kris