We have several Grohe Atrio 21 019 faucets throughout the house: One of them has become rather tight to open over the years -- on both hot and cold sides -- and the manufacturer sent me replacement cartridges. Judging by the schematics below I should be able to just pull off each handle: But I cannot! Grohe's rep on the phone confirmed, there is no screw holding the handle -- but it would not come off! She suggested heating it -- which I did, with a heat-gun. The side became searing to touch,...
