I've currently got a Vortex Pro GT tripod with their pan/tilt head. One of my complaints is that the spotter moves a little after locking down the pan/tilt handle. I don't mind it right now, but I'm going to be picking up a ranging reticle in the near future and I know this is going to drive me crazy with the reticle. Any recommendations on a different style head that'll keep the spotter in place after locking it down? I know a better tripod with no center column would help, but I'm still kicking around which system to go with as ideally I'd like one sturdy enough to mount a rifle to but light enough and small enough to pack in on backcountry hunts for spotting.