Here are a couple more pictures. I got the actuator mounting bracket designed.
Here it is with the actuator shown. This more accurately shows the scale of things. The grill block is not that large. The entire assembly is only 3" tall and 9" wide currently. It will get larger to add some sort of mounting provision. I just haven't gotten that far.
Next step is designing the linkage between the actuator and the blade. This has been proving tricky as I'm running out of room.