Mounting certain heads in a seat and guide machine can be difficult. This is especially true if the heads are uneven or the head bolt holes aren’t at the same height. I have a few pieces that came with the machine but they don’t solve all the problems. I have several different length bolts and nuts that I use as adjustable stands. They fit inside the head bolt holes and can be adjusted by turning the nut. I ground all the marks off the top of the bolts so it would be smooth. I keep them in my tool box next to the machine for easy access.
D and D Auto Machine