Ok, patched my megaman X3 to work in ntsc mode after about 72 hours of work and c####g.. arghhh. Anyways I got the screen centered and everything.. but Im having a problem with the fmv of the game

The whole game is evened out, but when the fmv comes the screen starts to roll and flicker and then it crashes! Im on a ntsc ###ne (the newer model) with an internal mod chip if thats any help. Liek I said the game plays in pal mode but the screen is too low.. and when I fix it to ntsc and use a y-fix code to center the screen it wont play the video right.. somebody please help!
-Rockman out-