1920 Holley carb question

Go to REALLY GOOD carburetor shop if there are no other options, and make sure they use a high quality rebuild kit. I have used this formula and got nothing but great results over the many years I've been at this (I know of a kick-*** shop in NJ who provides shipping, if any of you need to exercise this option....he's not a relative, he just does great work). This option is ALWAYS less expensive and preferable to buying the inferior garbage that the larger stores sell. The results are readily apparent.
You can try that, and of course, refer to these folks....they obviously know these cars.