26-11-2021, 11:48 AM
If it were mine, I would repair that by building up with TIG weld and then use a file and a mounted point in a Dremel to clean up the ball radius and the slot. As to machining it, the gearlever would be a really difficult thing to secure to a milling table. That slot would originally have been machined with a 'Side and Face' cutter using a horizontal mill.