About this 3D model

I am interesting about the Swivel Nozzle called 3 Bearing Swivel Nozzle (3BSN) for Jet Engine for the recent STOL Fighter.So I made the following model series before; [Basic Model] - Phase 1 - Basic Model - Each BRG can be turned individually by Knob [Manual Model] - Phase 1 + ; - Phase 2 - #2 & 3 BRGs are geared to synchronize and can be turned by 2 Hands. - Phase 3 - All BRGs are connected with Gearbox and can be turned by Single Knob. - Phase 4 - Phase 3 + Additional GB. This is my Target Model to turn Single Lever. [Motor Driven Model] - Phase 1 + ; - Motor Driven Synchro-GB, Pars This model is designed to improve duct bearings using “Ball” in order to get more stable movement and is fully interchangeable of [Basic Model].https://www.myminifactory.com/object/3d-print-swivel-nozzle-for-jet-engine-3-bearing-type-phase-1-84213 A. Design points:1. This model is completely interchangeable to [Manual] and [Motor Driven] model because of using same gear requirement.2. Duct inside diameter reduced from 70 mm to 62mm. B Assembly Manual (PDF format, total 12 pages)The detail assembly manual including "Parts-List", "After printing treatment" and "Assembly procedure" are prepared based on "Standard Skill (Filing, Drilling, Tapping and painting)". C. Download files includes; - files: STL Files (16 items) - “ws” of last 2 digits means “With Support” special designed. - PDF(Zip) File: Assembly Manual D. Purchase Parts Information; - See Assembly Manual - Steel Ball - φ3 (Approx. 100ea) - Aluminum Tubes - φ9 - Screws Micro screws M1.4x6L - Direct screw-in to 1 mm dia hole (No nut) But there are many small parts, if you can get M1.4-P0.3 Tap, using it to make introducing thread is recommended. Quantity of screws can be adjusted by your experience. E. Total Net Print Time: Approx. 40 HR - (Estimated as case of PLA, 0.4mm Nozzle, 0.2mm Layer Height, 40% infill and No raft and support) Note: When at actual print, each parameter may be adjusted by your experience. For parts having gear teeth, 100% infill and 0.2mm Layer Height are recommended.