Thanks for the comments guys, just saw them.
With the snatch and the clean I've been recently trying to focus on on jumping my feet out to give me space to drop it and been working on the hip mobility to go along with this.
I think shoulder tightness is the cause atleast to some extent for the soft lockouts like you say Blake. Are there any specific stretches you would recommend? I have Kelly's book and watch along of his videos but I do tend to spend more time on the hips than the shoulders.