I have the CZ 70 so I know what your talking about, I just got my Pa-63 back from Novaks in West Virginia. I had them mill it and install low profile carry Novak sights . Made a huge difference in sight picture. Of course the sights are now worth more than the pistol $180.00 invested on sight work gun only cost $159.00. Also hve CZ 52 with Novaks Sights installed, pics posted in this forum under my refurbished cz52. I like the Cz 70 I striped mine down cerakoted it and upgraded the firing pin with one from Harringtons.