dpf4052 Beginner

I seem to have an issue where my elevator trim is not matching my throttle settings. As I takeoff and climb at 100% throttle the Cessna wants to dive and I have to hold up elevator to even maintain level flight. This happens even though I still have takeoff flaps deployed. As soon as I bring the flaps in and start to reduce throttle, the opposite happens; and I must hold down stick to keep from climbing, even as I reduce throttle more. This makes landing especially uncomfortable. I don't have…

A newbie issue here. With various planes i'm finding unexpected effects when I change throttle settings in flight. For example, with the Cessna 172 when I reduce throttle in flight the nose wants to pull up, and I need constant forward stick to maintain level flight. When I increase throttle it's the reverse. With other planes it is sometimes the opposite situation. I've been flying R/C planes for the last 40 years, so I know that's not normal, I must have something set up incorrectly. I…