How critical is it to focus the adjustable eyepiece on the M1 since it also has a side focus? And, what is the proper way to set it? I was shooting my new Sendero 300 and was having trouble getting consistent groups and I'm wondering if that eyepiece might have been an issue because I was messing with it (because it's something that can be messed with and I'm a guy) the other day and I ended up moving it from it's factory default position. I read that if it's not adjusted correctly that as I shift my head up and down, the POA moves. Does anyone know anything about this issue. Any help would be greatly appreciated. Corbett M.