LD340 Can’t Get The Carb Base To Seal

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DC 500 cfm carbs. Plan is to try it out on my 340 straight gas first then later the nos just for fun. Then on a 360 going in a LRE.

I did not build this setup. But I love the attention to detail that the guy did that did build it. Notice the acorn nuts on the end carburetor studs and things like that.