Kavorka:  If you are somewhat handy with tools (file & drill), consider making a taller front sight blade from sheet steel using the profile of your original.  With a proper size punch, it is easy to drive out the front sight pin (left to right - if looking from the breech).  The original blade is then just a friction fit in the base.
  The higher new blade can be adjusted (filed) by trial and error to center your shot group.
  The original blade can easily be reinstalled.