[Marcus26]

Point weight doesn't change arrow spine.
Spine is a static figure that is the amount of flex induced to the arrow using a set amount of weight. Changing the arrow point weight won't change spine. The only way to adjust spine using the point is to change the insert length of the point which moves the front node.
Anyone who uses the words 'dynamic spine' needs to be shot because it doesn't exist.
Changing point weight will change the amplitude of the arrow flexing, but not teh frequency, and it's the frequency that matters.

Changing poundage won't change draw length because draw length is determined by cam rollover which is set independently to the limb positions.
Changing the draw length by altering the starting position of the cams will alter the bow's poundage.
Changing draw length by changing the draw stop position will not alter poundage.