Who hasn't tried following some MOC instructions only to discover problems? This TIE Outlander build (free instructions) is neat but has several issues, the biggest of which are steps 44-46.
The directions show a 3-length technic pin (6558) that connects to four pieces. The "orphaned" pieces do connect to other things in later steps but are never connected as shown in step 46, leaving the build less durable than I'd like. The directions later use the opening for other technic pins as well (steps 86-91), so even if a 4-length pin existed, it would not solve this issue.
Is there a way to connect two pins directly together, end-to-end? I know there are rods that can fit inside of pins; is this a legal connection, and would it work here? (I'm not sure if "rod" is the right term.)