"Wobbly"/un-interlaced images when transferring Motion file to FCP

Question

I'm at wit's end here. I did a short 10 second intro for a press reel in Motion that is pretty basic and looks good in Motion (it's just images from the show flying across the screen, with a cloud emitter as background). The problem is that when I import it into Final Cut Pro, the images get all jittery and wobbly. It looks as if they are going in and out of different interlacing stages, which makes no sense.
The images were taken from the theater's website, and I have have tried them both in JPG and PSD formats. They are all being scaled down from the original size a touch after I import them into Motion (would that be the problem? Didn't think to try that...). As I said, they look fine and clear in Motion, but when I export into a Quicktime movie or render it and play it back in Final Cut Pro, they get all jaggedy/wobbly (for lack of a better technical term). Stills exported from the Motion file look fantastic in Photoshop (and in Final Cut Pro when I use them as background) but a paused image in Final Cut Pro looks very jagged.
I've tried everything I can think of, and even upped all the render settings in the project, to no avail. Any ideas/suggestions?

Answer 1

I have tried exporting from Motion using the Animation settings, per the suggestion of other threads, which made it look really good when I opened it in Quicktime, but it still is jerky and the resolution is dreadful in Final Cut Pro, even when viewed through a Firewire connected monitor (the settings I have in Final Cut Pro are the DV NTSC 48 khz basic settings...720X480, pixel aspect NTSC-CCIR 601, Field Lower (even)[I tried 'none' for fun and no change], 29.97, compressor: DV/DVCPRO-NTSC, quality 100%. I've played with the video processing settings, using Motion FIltering as 'best' and rendering in RGB, to no avail).
I have tested it with photos that are 300dpi instead of 72dpi, and while that seems to have made a slight difference, the pictures still move across the screen in a jagged/wobbly format (the final picture looks great when it reaches the endpoint and just sits there)
As for the motion settings, as I said, I have tried exporting it using the Animation setting (which made it look great in Quicktime) and using Field to "none" and nothing has changed once I import it and render it in FCP.
It's a simple 10 second file created in DV/NTSC. Very few bells and whistles.