When I used to cut timber there was somebody who made a plate that had a hole for the raker and plate went on top of 2 teeth and you simply filed the raker off to the top of the plate, cheap and easy
Carlton made those, invented by Ray Carlton, one of the nices guys you could ever want. After he died the company was sold to Oregon. I have several of those somewhere but I file rakers by how the chips look.
Yes, I worked in the machine shop at Carlton.
