The last beans I was using were way too bitter....these are too sour....need to test 2 more beans before suspecting the machine.
I'm not being mean here but in my case I have found shots which are unbalanced are almost always my fault as opposed to my machine's fault or a problem with the beans.
From reading your previous posts it sounds like you're in the ball park in terms of brew ratio. This is really good! I would recommend grinding finer to slow things down and keep going finer and finer with the same dose until you notice a change in flavour to bitterness. You could also try reducing the dose slightly - perhaps by 0.5g at a time - to see whether that moves things in the right direction.