I only modded 2 DVD drives, not Xbox's. I tried both of the DVD's in the same xbox w/ the same results. The drive ejects fine when I use the button on the DVD drive, just not the xbox eject button. You will get an xbox error if the jumper is set to master. It should be set to slave.
I have an original xbox w/ the Tompson drive, so that probably makes it V1.0 One thing I did notice on my xbox, is when I turn it on and let it load up for a few seconds w/ a game in, then hit the xbox eject button, the eject button flashes, and I hear a sound in the Samsung that sounds like a "click" like either the laser assembly moves or the tray wants to come out, but doesn't. Drpiety, are you getting this sound?
Which DVD mod guide did you find to be the easiest to follow. No offence, but I swear they are all a little dif. on how they put it together. Some show the back of the xbox cable, some the front, some not saying-just misleading drawings. Some have Trin/Trout backwards, etc.