Recently purcased a Big Knob Passive (great bit of kit) and in the plastic bag
containing the registration card is a much smaller bag containing a small grub screw.
Its 2cm long and about 2 to 3mm thick.
The top is so small that it is hard to tell but it looks like it might need a hex screwdriver but there was nothing in the manual or box that indicates what it is for.
Can anyone enlighten me?
Many thanks.
