[BAracer]

Here's a pic of my plate. 
Carbon fibre plate on sponge feet
Underside are magnets of sufficient strength to replicate the downforce from Ninco track rails. 
The holes are to give access to depth gauge to measure ride height. 
Alan

When this is all over Alan, i need to come and see your workshop and pick up as many tips as i can from you!

As you can see, I'm just getting into mahogany stage whereas you are long gone from here!