I did do the change required on the Z scale, and the height looks about right, but if you compare the two images, you will see that the imported terrain should be more spread out and less clumped up.
I will add that the help on the forum has been brilliant, and it has gotten me this far, but at this stage I am so close to having it working (I thing, anyways) but have no idea what to do!
I should also mention that it appears to be horizontally flipped somehow.