Thanks Dysonman1,
That's the first time I've heard this problem described in that way.
I think you're confirming my suspicion that UK machines may not need this mod. because I don't have that suction issue with the original Tradition set-up. Mine goes like a tornado and sticks so firmly to carpet, that I cannot literally push it along on closer settings (and I'm a 6' "brick-outhouse" guy). Same with my Legend II.
I can't detect much difference between them. These are 240v UK models, permanently on high speed. Is that the reason? Has anyone Stateside tried the original Tradition fill-tube set-up and switched their motor to Hose speed?
Anyway, I ordered the larger fill-tube (£15 fron ELI) and I'll be modifying my Tradition to see how it goes. Open to the idea that this may be an improvement for me.