That's cheep enough to have a play, let us know how it goes.
I'm now two up on the removed Phenolics from my old/scrap/spare carbs, I'm aiming for three then when I try remove them from my original carbs I have the insurance to replace them if it doesn't work.
I've fitted larger stubs and found that with a minimum of sanding the OD of the stub, it will fit in a carb mouth once the Phenolic is removed.
I can restore an airtight seal by adding a silicone O Ring in the mouth.