i recently pulled my carb diaphragms out.
i noticed that the "bottom section", of the tubes, were pretty scratched up. the FIX, is to take the "tube" in one hand, press the diaphragm end into your other palm, twist the tube.
this re-orients the "tab" in relation to the scratched tube!
i do not believe the rubber coated part is actually "glued " to the insert and washer. i believe it is merely a close press fit.
some one correct me, if i'm wrong, here.
just jt:banana: