I did not. I actually disassembled the carb and put back together, for a completely different reason. But I did make note snug everything up very well upon re-assembly
The carb base gasket was partially torn when I removed the carb. I’m doubtful that was the cause of the whistle, but it’s currently my best theory.
The carb is still sitting in my toolbox from many weeks ago. Have a rag plugging the manifold at present. Good reminder to get back on this thing.