@30West- The only thing you may find, Brent (and anyone else out there running Kadrons), is with time you may notice a couple of things- the carbs getting a little less responsive to tuning and them tending to run a little lean being the first. This is from the throttle shafts running directly in the carburetor bodies with no bushings- the fix is to get someone to bush the bodies. The 2nd issue that rears it's ugly head with time- the linkage joints wear. I believe you can buy replacement pieces.
In spite of the criticisms you'll read online, Kadrons are a fairly simple, reasonably well made dual carburetor kit with much better fuel distribution (and cooler running) than any centrally mounted carburetor. I wouldn't do the re-work necessary for really big engine power but for a mild up to 2 literish engine they do work well.