When the latitude screws are loose, my AM3 has a lot of up/down slop if you wiggle the saddle. In fact, every time you move it back & forth, the adjustment lever rotates due to gravity and goes down a little more each time until it's vertical. The slop stops when you tighten things, but it seems excessive for something so expensive. If I hold the adjustment screw still, the slop is essentially neutralized. Is this normal? Of course I wouldn't run the mount without tightening, but is there perhaps something maladjusted? All of the other screws seem very tight.