One thing with the Manix 2 lightweight: There seems to be more variation concerning the action than with other models (and also with the G10 Manix). From completely free falling to rather sticly.
I got that Impression from what I read here, but also the three Manix LWs I had/have myself .Out of the box one completely "drop shutty", one decent and one rather sticky (which I don't mind actually)