The pilot screw castings broke off of three of my OEM Keihin CVKD40 carburetors during a teardown for cleaning (don't ask). Since I have all of the associated needles/screws/jets/gaskets/diaphgragms, I only need to replace the aluminum bodies for those three carburetors. However, all I've been able to find from dealers/parts retailers are entirely assembled carbs at $476 each, or $1230 for the set of four! Does anybody have any suggestions where I can find just the bodies new or used, or whether the broken aluminum pieces could be welded back on? eBay didn't have much to offer either.