Originally Posted by Adam
Bending it up or bending it down? If it's higher in the middle there might be a slightly raised point in the inletting. Cover the bottom of the action in oil, bolt it fully into the stock, then remove it. Where there's oil on the wood, sand away a little bit, rinse and repeat.
Its being pulled down in the centre, The oils a good idea, I was thinking of using engineering blue. I do know that the front of the stock spreads when the bottom bolt is tightened, so I may use a pillar through the bolt hole, so I can tighten without distortion.