I have a handful of Kahles k624i and habe found I can set parallax at 700y ish and shoot relatively parallax free from 400-1000y at the 10-12x mag range. My minox zp5 is close. Does the zco 420 suffer from the short body design, requiring more attention to the parallax? I'm planning to acquire one in the next couple months. Just want to make sure this optic does everything I'm wanting it to.