A small observations about the 3235 movement in my Datejust

[Josunese1975]

I've read numerous times that I need to fully wind the watch (40 - 45 turns) before measuring it on the timegrapher. First measurement seems to be always dial up. For a 32xx movement at 53 degree lift angle the maximum is around 270 amplitude. That's mostly what's accepted. I did that last night to my 4 year old watch. And it reached no more than 250's. Other positions showed 190's to 220's. So naturally I got worried thinking the good old bug has finally infected my watch as well. But when i woke up this morning to remeasure it showed 265 dial up. And I've worn it few hours now and it showed a healthy 270 to 275 amplitude. What am I missing? So if you measure it right after fully winding it then it'll show lower amplitude? But measuring it after wearing it is more accurate? In other words, should I let the watch "settle in" for few hours before measuring? Should I leave it on the timegrapher for at least 10 to 15 minutes to get an accurate reading? Maybe getting a timegrapher was not a good idea... haha.