@ vivek:
Thanks for the photo mate, I’ve got 4 clamps just my shim Now, not sure if I’m going overboard!! I think I will also go down the cardboard or thick cloth route over the frets as well
One clamp centred over the fretboard should be plenty IMO. That's all I used on my PRS.

Also, for clamping, this what use:

Click image for larger version.  Name: Clamping block.jpg  Views: 176  Size: 370.2 KB  ID: 42520

It ain't pretty, but it does the job...
I've been threatening to make a "nice one" with a bit of hardwood for a few years, but just never seem to get around to it .

@ mrpearson:
Also, I will be spraying on poly and then applying wipe on poly.
May I ask why you're using both spray and wipe on?