im new to 1911 and just got a PT1911. i am wanting to put a different set of sights on mine. the only problem is that i have no idea of the type bomar, novak ect that i need. is there any difference in the cut or is it the same on all 1911s? im wanting a 3-dot sight instead of the straight 8 that it came with. any help will be greatly appriciated.