Using FME i want to reproject an ECW image to EPSG:3857 from EPSG:28354.

I intend to sit this image(and many more) over a large mosiac.

Using CSMapReprojector this re-projects with a boarder. I've read other discussions about how to clip and set the nodata value but none seem to work.

Can anyone please suggest the right method for this ECW(Band3) -> Add RGBA? -> Reproject -> Set No Data

Example below is something i've tried (also with the RasterNoDataSetter but to no success).