I have some difficulties centering the object on the middle of the screen. Infact when I press the mouse wheel the view seems to fly away too fast. This is what happens : on the picture below you see that the object is too far,I don't see it clearly and I can't edit it :
instead,below you can see that happens when I scroll a little the mouse wheel : the object "disappear" totally.
I have also attached this video to explain better. thanks.