Hi Jerry,
I haven’t tried using Motion for this. I am not very familiar with it, but it sounds like I should remedy that. I was only using the Chroma Key tool specifically. I rendered the footage to see how it looked and this is what it gave me.
I should also mention that the unrendered clip had large chunks of green screen appearing randomly within the garbage matte space when i moved the play head along the time line. The green screen “chunks” would appear and disappear, showing up in different places each time. Upon rendering, they never appeared again but instead this vertical line shows up. It was frustrating to say the least.
Here is a pic of the item properties of the clip being used in my post above. Not being very familiar with Red Footage, I have not tampered with any settings at all other than accepting the prompt to change the FCP settings to match the clip.

Thanks again,
Brandon