Hi Jim, the stride is the back part of the fork which sticks out from the top fork when laid on top of each other. The issue you have is not enough fork space, you can see the seam pulling through the 'crack' creating a roping effect down the inside of the buttocks. It wouldn't lower the CB point but straighten it a bit, no, you're right it wouldn't shorten the stride by lowering. I think because you have a sway back you have to redistribute the cloth to get the in-seam running up the centre of the leg, so shortening the front and lengthening the rear gives the same amount of cloth, just in a different place. I would first let out the inlay on the underside to see what the result is.