Thanks for the help, I am a way off flying yet, but as you say I can try it, and then add any shims should I need too. The plan instructions suggest bolting the stab on and adjusting the flight using that.

I am not happy adding nuts and bolts that far backwards of the C of G, so intend to fix the stab at 0 degrees, and add the shims as sugested or simply add elevator trim, or maybe adjust the 6 ailerons.