The screen (the thin mesh, not the more solid shower head behind it) got completely destroyed and fell out. Couldn't find the part on the web. It looks as though any shower screen can be fitted for as long as it has a suitable hole for the screw. Some pages on the web seem to imply Rancilio/Magister parts are the same. Any word of advice? Thanks!

Update:

The gasket is described as MAGISTER/RANCILIO here

http://www.espressoparts.com/EPR_17

On the same site I see the Rancilio screen and it looks like it might fit

http://www.espressoparts.com/R_39

Found the Magister part. Must learn to use google better one day:-)

http://www.espressoresource.com/index.p ... &Itemid=53