I have the Alexia. I found I could get microfoam with the original two-hole steam tip. But for aesthetics and convenience I replaced the original steam arm with no-burn steam arm also changed the tip to smaller 4 hole
....great micro foam since.
Uri for the 4-hold steam tip: http://www.chriscoffee.com/products/hom...ourholetip
I would contact Chris (or Mary) at chriscoffee.com to ensure the 4 -hole steam tip will thread onto the original steam arm.
If you have not already done so, please do read the FAQ and search for microfoam tips on this site. My additional 0.02cents are: easier to get microfoam with very cold whole milk and frozen pitcher (stored-in freezer).