I have a Remington 581S. I drifted the broken sight out and tried to drive in a replacement. The new sight was very difficult to align. I ruined the replacement sight and just ordered another from Numrich. Is there an easy way to install this sight without the need to obtain special tools? I have been using a brass hammer and brass drift punch. Do I need to recruit someone with more patience? Would heating the barrel and cooling the sight help?