For now forget about temperature surfing. First things first. Until you can achieve a proper extraction nothing else matters. Using a double basket you should be extracting 60ml in 30 seconds. Once you can do that then you can start fiddling with other things like temperature surfing and adjusting the extraction to your personal tastes.
You say you've used 'these beans' in other machines with good results. Does this mean you've used the beans from the same bag(s) as you're having problems with or just other beans from the same source(s)? What day you bought the beans doesn't matter diddley until we know what day they were roasted. So, what day were the beans you are using roasted?
I can't tell what model grinder you have but it looks like it is likely not suited for espresso. What is the model number?
Java "Specifics/details matter" phile
You say you've used 'these beans' in other machines with good results. Does this mean you've used the beans from the same bag(s) as you're having problems with or just other beans from the same source(s)? What day you bought the beans doesn't matter diddley until we know what day they were roasted. So, what day were the beans you are using roasted?
I can't tell what model grinder you have but it looks like it is likely not suited for espresso. What is the model number?
Java "Specifics/details matter" phile


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