Two years of 4 to 6 shots per day and your average La Pavoni Europiccola is going to be due for a rebuild. It's not too hard, but you need to be handy and have the necessary tools.
1. Descale, 50/50 mix distilled vinegar/water, boil (just), vent some into the steam tube and the group head, and leave for a few hours
3. As it's coming back together, take the opportunity to really polish everything. Rebuilt...
4. Worth it. Smooth easy pulling, strong steam, delicious shots.
To do this kind of rebuild yourself, watch and follow the guides from Orphanesspresso.com - also where you should get your parts. They know so much about these machines and tend to have the best seal/gasket kits available at any given time.
Europiccola The Rebuild Part 1 - 5 Minute Breakdown - YouTube
Europiccola The Rebuild Part 2 - Rising from the Ashes - YouTube