I can not agree with the previous speaker. At my Gaggia RI9303 / 11 the modified tube was fitted without difficulty. The assembly was out, new in, turn the union nut, finished a breeze, unscrew nut old pipe. With practice and 3.8% milk now also works foaming. The foam is beautiful kremlin - unless you exaggerating, bring the milk when foaming above 70 ° C, producing expanding foam).