Are there any opinions or specs on how much water volume/pressure you should be getting via pre-infusion? I have an old BII that was converted to rotary and plumbed in; with no portafilter in place, it draws about 8oz in 30 seconds with the lever on the half-way stop. Does this seem high/low/depends? I have no filter on the line right now, so maybe that would change it. It also seems to pre-infuse pretty fast. With a double shot loaded in the porta-filter, coffee appears within 3 or 4 seconds, and the extraction speed is only slightly slower than with the pump running. Seems wrong somehow, but I'm not sure what I would be adjusting, other than maybe something in the water line itself.
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