Bulge Filter is causing video offset - FCP7

Hello!

I am trying to defish video from my new go-pro hero and I've put it into final cut via mpegstreamclip and I have applied the bulge filter. Unfortunately it is now offsetting the video so that only a small corner of the video is visible in the lower right-hand corner of the preview window.

I don't like that.

I may just be tired, but I cannot figure this out at all...

Any help, greatly appreciated.

Cheers!