I glad to hear that the conversion worked for you. I would suggest either the pioneer A04 or the A05. I have the pioneer 104 and I burn at 1x. This doesn't bother me but the A05 I believe burns at 4x. The 4x media is more expensive though. You can also get a off brand such as a cendyne or something. They are cheaper and essentially the same drive.
I also had centering problems with my pal to ntsc conversion. However like you said it is playable so I don't complain too much!