Quote Originally Posted by BrokeDown View Post
Gabe, did you notice any bowing of the board with the k350? I just installed mine the other night, and although the springs are pretty compressed, I still have a little room to move down, but I don't want to damage anything by overtightening. I have them as far as they will go when applying light/moderate pressure on the thumb screws.
The springs used have a constant of 1.4kgf/mm... we recommend between 5-6mm of compression so about 8.4kg (or 18.5lb) of force per post.

But there are other factors that can come into play, especially pin grid orientation