Hi to everybody! i have a "little" problem with my fretboard I ordered it in a 24 9/16" scale which schould be about 623,8875 mm. When it arrived i noticed a "zero slot". The slots in are 0,6 mm width. After control measuring i noticed that first fret and the following ones are off about 0,3 mm which means that they all were measured from the middle of the "zero slot". How can i handle this? Thank you for your help!!!