Having problems getting it zeroed. I have a 14" .44 magnum barrel with iron sights. Front sight does not appear to be filed, but even with the adjustment bottomed out I am hitting several inches high at 50-70 yards. Am I doing something wrong, or does TC offer taller front sights?(The only thing I can think of to fix the problem). I also have a 10" .22 hornet barrel that appears to have the same front sight, but I haven't done much to try and zero that one yet.