Neptune 4 Spool Roller Mod with 608 Bearings (Rotated Threads)

With the original version, tightening the holder into the arm on the printer resulted in the roller bearing surface being on the bottom instead of the top. Backing out the holder so the roller was on the top resulted in it being so loose it would just flop down out of position again. This version rotates the starting position of the threads so the holder can be tightened into the arm and keep the the bearing surface facing up. I didn't change the actual roller itself so be sure to grab that from the original!