OK, well I'm not here to argue theory or the why's of it happening. But, my engines with remote needles DO lag in response to needle changes. As I said, it's more than one engine in more than one airplane and they all do it. Point being that nobody is going to convince me that I'm imagining things. But the bottom line is that I'm aware of it, so it doesn't really matter. I just turn the needle slower and give the engine time to catch up.