I have a relatively simple question: When you calibrate a lockout machine and you find the exact deviance (let's say 2kgs), is it necessary to adjust the screw? Can't you just set the tension 2 kgs higher or lower than before?
I would calibrate the unit so 50# is 50#, not 54.4#. Reason? You might forget that the unit is pulling 4.4# higher if you are in a rush. You have to re-check the unit at least once a year or every six months. Easier to remember that 50# is 50# in the future rather than having to subtract 4.4# every time you select a ref tension. The kludge will work until you forget why it is there. Would tell someone who askes for 22.7 Kg that you strung it at 20.7 Kg?