After careful assessment, it seems the “foamies” gasket is working well . The leaks are elsewhere. feeling some air escaping around the highest reeds, I rewaxed all of the reeds. this seemed to help a bit, but I am still leaking significant air somewhere. I tried to find the four holes you were talking about, but came up short. can’t find any real source for the leak, but it seems to be mostly coming through the third to last highest reed. will continue to tweak the washers, but would appreciate it if you could clarify the location of the “intentional” leaks.