Ive just bought myself a Pullman tamper, its a huge improvement on the sunbeam tamper because it fits snugly in the basket 
Its cured my breakthrough issues but Im finding that the puck has a strange texture on top. Its lovely and smooth until about 5-10mm in from the edge of the basket. From here the entire centre looks as though the top 1-2mm of grounds have been washed away. :-?
The pour looks good and the coffee tastes as good as it ever has.
The puck looks dry and feels nicely spongey.
Am I doing something wrong? My guess was either underdosing or not enough tamp pressure however tamping harder does not change anything. Dosing up just gets it to hit the shower screen, making the puck stick to it and break apart- veiwing the puck then is a useless exercise.
Am I worrying about nothing?

Its cured my breakthrough issues but Im finding that the puck has a strange texture on top. Its lovely and smooth until about 5-10mm in from the edge of the basket. From here the entire centre looks as though the top 1-2mm of grounds have been washed away. :-?
The pour looks good and the coffee tastes as good as it ever has.

The puck looks dry and feels nicely spongey.

Am I doing something wrong? My guess was either underdosing or not enough tamp pressure however tamping harder does not change anything. Dosing up just gets it to hit the shower screen, making the puck stick to it and break apart- veiwing the puck then is a useless exercise.
Am I worrying about nothing?
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