I am after a bit of advice here. I have found that I shoot low when kneeling. For example at 30 m sitting my poi is bang on, then kneel for the same shot, with same turret settings and poi about 20 mm low. I haven't had this before. I have tweaked my stance a little of late and am guessing its all to do with my head position. Scope is a Leupold comp 45 x 45 on a HW97. Thanks, Paul.