Thanks, man. It is perfect!
I am a control freak, sorry. My measurements got to be as precise as possible. I think it is all -my-early-life-psychological-trauma related thing. When I was 19 they told me that either I take my time and do good job with preparation to attack, or if I miss - they (Americans at that time in history) will hit me hard and I won't see my momma ever again

. I remember one dude during lecture missed some info from teacher's "recon report" and dared to ask again. High-ranking Navy officer approach him, and yelled in his ear " I am dead, God damn it!!! Artillery shell just exploded 3 meters away from my balls! What are you gonna do now, sailor, after missing such a key information? There is no one to ask about it again!" And he hit his shoulder with wooden stick that was intended to use as a pointer. Stick broke in half and we were rolling on the floor laughing through tears.
I can go on and on, have so many funny stories... That "dude" by the way is now commander of escort ship in Pacific. His shoulder is OK.