After a small pause due to moving buisness I checked the prop pitch behaviour of the 109 and to my delight the speed is now definitely better. All thumps up for this.

However, I also realized that pushing the lever up will make the pp go up but the pp does not stop increasing when releasing the lever. Basically this will make the pilot guessing how long he has to push the lever in order to achieve a certain pp. I have strong doubts that - considering how important precise setting of proppitch is - this kind of behaviour is accurate history-wise. At least for me it does not make sense. It is more precise to keep the lever up until the pp clock shows the desired value and then one would release it. Bingo, desired pp achieved.

With the current behaviour the pilot needs guessing. This simply does not make sense.