Depending on the diameter of the used arrow, the correct launcher should be used:
up to approx. 7mm the launcher 4/0,25, for larger diameters the launcher 5/0,25.
The Guidance Plates do have a bulge with 0,1mm (series) or 0,3mm (optional): these can be mixed in their lengths (available lenghts 17mm, 22mm and 26mm) or used with the same length. In any case Guidance Plates must be mounted on top and on bottom of the launcher between tilting blocks and launcher, even using different lenghts.