Here are the instructions for the third new lift in my knex ball machine Paradox. The Center Arm Lift works good, and it has a low piece count (except for silver spacers).
This lift was originally invented by MechanicalCreationMaster in his ball machine Krypton (Original name: Freefall Wheel Lift) The Center Arm Lift is based on this concept, so a lot of credit goes to him.
If you build this lift, read every image note! It will help you a lot! If you have any problems or questions, feel free to comment or PM me.