group pulling slowly

[jmeiss]

one of our group heads pulls shots slower than the others... it takes a good 8 seconds to see espresso coming out of the portafilter, while the other group heads take only a second or two. I am assuming that it has something to do with the amount of pressure the group head is pushing through the portafilter....

ideas?

 

[CCafe]

Check your screens.

 

[jmeiss]

yeah - they're clean....

 

[ElPugDiablo]

both groups are getting 9 bars pressure?