I purchased a speed bead and fast fire 3 combo and would like to ask a few questions. If my xtrema is shooting low will it help to have the 1/4 inch spacer on. I guess I mean if the ff is higher will I have to adjust more to raise the pattern. I'm dealing with having only a few shells and don't want to shoot them all up on a learning curve. And I'm going to have to raise it a bunch for it to work correct. Also how do you keep the red dot on longer. It seems to me my ff3 will turn itself off and I would hate for that to happen in the woods waiting on an old tom to show himself. Rick