Quote Originally Posted by tim s View Post
From descriptions the clamps are not intended to be mega tight, just enough to hold the barrel. The rubber ring inside may mitigate a little too much pressure, as well as allowing vibration.

I think it's the position of the clamps along the fore-end that would affect tune.
I have one of the EC stocks,they recommended the barrel clamps are torqued to between 13 and 15 nm