Sean's plans and Norm's plans seem to show that this piece is flush with the rest of the ion arm on both the top and the bottom. However, Stefan's plans show that this piece extends above and below the rest of the ion arm by about 4/5 of a millimeter. The pictures look like these might be measurements of a greater value, that the top and bottom may not be equivalent, and that they may vary from pack to pack.
Can you speak to this as you saw them in person? Thank you very much for any help you may be able to provide!