Load the install.wim. Go to the Intermediate tab and select WIM Manager. Then load the install.wim and delete the directories you dont want. Simple as that.
Cheers anarchist9027, For some reason my copy of WinToolKit kept either hanging or wouldn't load the install.wim so i downloaded WinAIO Maker Professional v1.3 from Josh Cell and i was able to do the editing of the .wim's there no problem. Thanks again for your help and reply.
You can always use dism to export to a new install.wim with compression too: Code: Dism /Export-Image /SourceImageFile:%~dp0x64\install.wim /SourceIndex:1 /DestinationImageFile:%~dp0x64\new_install.wim /DestinationName:"Windows 7 Ultimate x64" /compress:maximum