I put these on a PRS SE, I used the threaded post bush from the original as the Wilkinson's seem to have a coating which makes it tight, almost feels threaded. If I was going to use the Wilkinson post bushes, I would wire brush the coating off the thread as it makes it slightly oversized. The Original post bushes wound in so easily.I also kept the original tuning buttons, which swapped over easily.Threading the strings through two holes seemed a bit strange but it work fine.The finished result was what I was after, so I'm a happy Chappy.