Hey I'm setting up a 50mm drill in an SL-30 with a gearbox, and the DFT drill from Kennametal for the VDI-40 hole just has a flat without a rack. Is this a big deal...I am up in the air on the issue. Anyone know of an off the shelf (easy to replace without making it yourself) "wedge" to replace the factory parts that don't have teeth on them either? Just a flat to match whats on the tool?