Do mechanical movements really "break in"?

Hi All I picked up a Tissot PRX Powermatic 80 (35mm) last week. It keeps good time, but has quite significant positional variations, with a spread of about 20s in different positions. Also, the amplitude is pretty low on occasions - 160 ish and it has a beat error that goes from 0-2.5. Manually winding it gives a 300 amplitude briefly, but it quickly drops back to 220 ish. I believe that the movement is a modified ETA with some polymer components - escapement and pallet fork

Let's do a little googling because I need a model number. Googling gives us this https://calibercorner.com/tissot-caliber-powermatic-80/ So if I guessed correctly why don't you try a lift angle of 47°. Let's quote something from the website Base Caliber ETA C07.111 (based on the ETA 2824-2) From the website that I quoted this from if we look at the specs for the 2824-2 for instance we find that It has a running time of approximately 38 hours. One of the problems that peopl