289 mm o 8 mm RODS

Hi ,
i want to assembly the rods on the header. but the 289mm rod are too thick. the 289mm is 8,05 mm, and its not posible to insert the rod (both guided).
the 298 are ok no problem and slide in both guided tours. its correctry 8 mm.

what can i do
or what must be do i get a new 289 rod with 8 mm (i dont have a lathe)

sorry i forgot its the K8400

best regards
Michael Kaufmann

Go to support.velleman.eu/ for spare/broken parts

Best Regards,
VEL337