I just received a pair of Victory HT 8x54 and tried to adjust the diopter setting for my eyes but the wheel will not move at all. I read that it is stiff so you don't accidentally change it during use but I can't get it to budge. Am I doing something wrong? I tried pushing/pulling the wheel to see if it might have a release lock but it won't move that way either and I've read nothing about a lock, only that it is stiff. The eye cups are also supposed to have 4 settings but the clicks are not clear and distinct like on my SF's and they feel stiffer - not really a problem since I would use them all the way extended but is this normal for the HT's?