I recently purchased an Oliver model 100 3-14 trip plow.  The previous owner replaced the 14&amp;quot; shares with 16&amp;quot; shares.  One of the shares on the plow has a broken tip and I removed it this past weekend.  On the share it says Raydex R16 and has 3 bolts.  I found Oliver 14&amp;quot; plow shares in the Shoup catalog, but they are 4 bolt.  The catalog says that the 4 bolt can be used to replace  a 3 bolt share?  Is that correct?  Does anyone have any other sources for plow shares.