bigmike
I’m not sure what you hope to gain by taking the flush lever off.
the only difference to it and the standard ACS / LSM actuator is when the pump is engaged.
to me, engaging it early by a correctly set v2 flush lever can only be good as it means more water and less air in the cylinder and therefor better pressure and less spongy piston feel.
The rotary pump will overshoot more on a “re-fill” as it has more instantaneous power and therefor needs to be on only for a few tens of milliseconds.
Also, in real life , the refill jumping past the set point by a bar or so for a few seconds prior to you releasing the lever and going to circa 11 bars will have no real life detriment and only psychological differences in the cup - In my honest opinion. The rotary pump was a nice to have in many peoples opinion that wasn’t necessary or required and I for one did not mind the sound of the old pump :-)
The big advantage, to me, of the new design is the new pressure sensing system and the removal or the mechanical pressure stat. But, in real life, both work perfectly well.
If you wanted perfect pressure regulation for the pre infusion pressure on this design then you would need to slow down the flow rate and I’m sure that would be far less desirable than perfectly controlled pre infusion pressure, which has no operational or taste advantage.
If your system is “more out of control” than im imagining then please post a video.