Before asking what might look like a very picky question, let me say that the CA65 is a great instrument (please see my post here
In the spirit of "I don't want to bother the dealer with this if it is common", do any players of grand feel action DPs notice variations from key to key in the height at which the sensors activate?
On my CA65, there is a difference particuarly between middle C and the next door D so that the "dampers" turn off the C about 1mm (by eye) before the D (i.e. with the C about 1mm lower on the upstroke). The main consequence for playing is that you have to be (a bit) more controlled with repeat playing the C if you don't want to hit the "damper" because there is less room between "play" and "damp" on the C. Some other note pairs are similarly affected.
You have to lift the keys very slowly to test for this (I said it was a picky question!)
If this is part of natural variability in the mechanism ("character" - wooden keys and all that) then fine; my concern is whether or not there is a quality issue on my particular piano & where I'd really value replies from other owners.