Gearbox 2 install and fin cant

Hi Guys

Looking into the Gearbox 2 fin boxs

Studied the installation guide and very informative But - cant check the fin cant to make sure its right while curing.

I guess with the jigs being precice and having very little tolerance, it should be fine. 

I would still like to check and have it locked in so there is now movement during lamination. 

And how do you combat bottom shapes? if you put a 4 degree cant box in on a vee bottom, you will effectively have more cant than if you installed the same 4 degree box in a concave or flat bottom

Anyone had issues and what was your solution?

Cheers