Thanks for all the input guys!
Sum, I guess I should have moved my rule book when I was taking pictures. Then only gap is at the leading edge of the spoiler on each side of the car, and it's only there because my piece of cardboard wasn't big enough. I am going to add just enough to fill that gap. As per the rules, this style of spoiler design is allowed to fill the horizontal gap between the leading edge of the spoiler and the body with a plate extending no further forward than the rear axle centerline. And it definitely will!
Spill plates are coming this evening. My only problem right now is that Mr. Kaiser has built quite a curvy car. Using my calibrated eyeball, I figured my spill plates could run right down the top of each rear fender. Well, not so much. Turns out ole Hank tapers at the back. I've got a couple ideas of how to make it work. I'll keep you all posted!
Buddy, Thanks for all the sage advice yesterday! It was good to talk to you man. After our conversation, I sat down and did a little thinking. I concluded that we are pretty much on the same page. I'm just gonna give 'er hell and see what happens!