Doesn't your setup make the chair brakemovement slow?
As in the pictures i posted you can see I used air-speed valves on the cilinders.
This gives me with the original RNR-controlboard a kind of fast brake until the pressure
builds up and then a kind of slower brake control.
I have the original controlboard and not the softmotion version.
I have tried to become an softmotion controller through http://www.jasys.de
but the chip he sent me
didn't work. They kept me waiting for appr. 3 years for a USB-contoller but when I called again
they said the development was stopped.
For now i enjoy following your development!