I know on the old dominators with all the linkage under the main body, safety plates were mandatory. I have an HP dominator from Dale Cubic and the majority of the linkage is outside. However there are 2 allen head set screws I see in the bottom. Is anyone else running safety plates on these carbs? The reason I ask is I had a 4 hole tapered spacer before, and now am running an open. The spacer served the purpose before.