How to export irregular shaped comp for GIF?
I've created a comp in the dimensions of 666x253 (because that size fits my web page perfectly). The idea is to make the comp then make an animated GIF.
I made all graphics and made the animation and in AE it looks great:

I tried to do that QT rewrap but am getting an error message, so I thought - just export all of the frames as uncompressed PNG's and then bring them into PSD and make the GIF there.
I can't seem to get it to work:

Note the image is pixelly and jagged. Also when it's in Encoder it keeps wanting to make the dimensions smaller (something like 222x something) so I have to go in and uncheck match and then type in 666x253. When I do that the result is above PNG's with jaggedy images.
Can someone tell me what I need to do to get this to work? Thanks.