okay some progress.
Have opened it up again and took the card out
on linux did
dd if=/dev/sdg of=/android.img
then swapped to my new 32gb microsd after which i did
dd if=/android.img of=/dev/sdg
the partition layout of the stock sd card is as follows
partition 1 primary
partition 5 logical 240mb
partition 6 logical 1.7gb
I added a new primary partition of 30GB as /dev/sdg2
The card went back in the streak and I reassembled and booted and .........
Next steps are rooting the streak and working out modify the mount points.
My thoughts on this are that I will mount /dev/sdg2 on /sdcard and create a folder called extension
I will then modify the vold.conf file to automount the sdcard under the extension folder. The rational behind doing this is that when i connect the usb I am hoping that this will mean that I get 62GB in mass storage mode.