I've been going through the user guide, page by page, with translations (looking forward to getting into doing the manual engine starts as the user guide describes). The user guide mentions that cruise power should be around 1200 RPM, and that the engine is prone to overheating, so avoid slow flight at high power. According to the user guide, an engine temperature thermometer was added (though there isn't one in the real aircraft) so one can monitor the engine temp and try not to exceed the limit. It suggests if the engine gets too hot, to try increasing speed while reducing power (descent) if possible.