Other people have reported a tight fit, but I'm the first one who actually needed a grinder AFAIK. Probably a good thing that I was the one who got this assembly (in order not to have to do without my machine I have done all the fixes and upgrades myself)! All except the new steam wand were done under warranty.
My machine is now 17 months old and is working better than ever.
I have not regretted choosing the GS/3
