DeeKay, a high-sided screw or bolt is by definition undertightened or overtightened relative to where the factory put it since they were filed flush to the surface surrounding the countersink (or counterbore in the case of the Fox trigger plate bolt). These surfaces are by and large not flat but have countours (lateral crowning of the upper tang)and the filed screw head only matches this contour in one position. Sometimes a full turn out looks pretty good but about 90 degrees out gives the game away--edges sharp to the touch, clothing snags. All a matter of degree. Take the cross pin out of a Superposed forend sometime if you want to see a real slant top bolt.
jack
