I've made a major remix of the Airbus A320 throttle from FlyAway Solutions. The reverse thrust lever was redesigned to drive the reverse blocker mechanism that physically limits the throttle's retard movement. When the reverse thrust lever is lifted upwards, the blocking is removed and the throttle can be retarded to the lowest position of the Saitek's throttle quadrant, enabling the reverse thrust trigger in the simulator (the thrust reverse trigger must be set to the event when the throttle's lever is retarded all the way back).
Each throttle drives one lever and 2 throttles can be used side by side on a dual Saitek throttle quadrant setup by default (as on the picture). However, the throttles can be also used on a single throttle quadrant, but then they have to be flipped so that the covers are facing outwards and the handles have to be switched with each other. So before you glue the engine number plaques, please decide how you will use the throttles.
I am also including the model of the cover with its holes covered by a 0.2mm thick polygon. This is done to avoid problems when printing the parts. On my printer the small holes on the initial layer are not printed well and often printing the parts ended up in a messy blob of plastic that was dragged around. After printing the parts you just need to punch the thin layer to open the holes.
The hole for the Saitek throttle quadrant's lever was made a bit larger on purpose. If the throttle doesn't sit tight on the lever, put a piece of electric insulation tape around the very top and around the middle part of the quadrant's lever to compensate for the gap. This allows a semi-flexible, but tight connection between the throttle and the lever.
The throttle has a detachable handle that can be installed by pushing the square part of the handle into the throttle's body. No glue needed, but make sure you clean up the supports inside the throttle to ensure the good fit. I included the flat cover for the handle to be installed together with the covers with autothrust disconnect buttons.
The engine number plaques and the A320/A330 covers with autothrust disconnect buttons for the throttle handles can be found here:
NOTE: Please keep in mind that for the Agronn's X-Top flight simulator panel you will need to implement the solution to tilt the throttle quadrants in order to be able to use the full extent of the lever's movement. With the default setup the reverse thrust lever of the throttle may not allow the throttle to be fully advanced. I am working on the proper solution for this problem.
The main body and the cover must be printed with their inner areas facing upwards. This is done to ensure lack of supports that would interfere with the inner surfaces. The reverse thrust blocker must be printed vertically, placed on its side. The handles must be printed vertically, with the holder parts located close to the printing bed.
Be careful when cleaning the supports from the main throttle's body! Removing the supports from the handle's placeholder as well as from the Saitek lever's hole may be a bit challenging, especially if your plastic is sturdy. Make sure not to damage any parts of the throttle, especially the reverse handle's and gear's axes. I normally use a long flat screwdriver to make a few holes in the support, then I try try to separate the support from the sides of the model and finally I remove the punctured and detached support piece by piece.
The throttle needs to be properly assembled after printing. The thrust reverse lever, the gear and the reverse thrust blocker must be installed into the body so that the reverse blocker is in its lowest position while the reverse thrust handle is fully lowered. When the reverse thrust lever is lifted, the reverse blocker must be also lifted all the way up.
If you have a tight fit (gear+axis, lever+axis, blocker+body), please apply a bit of grease or trim the part accordingly with a filer or sandpaper.
The side cover for the handle can be just pushed into the handle's body by force and they will stay there. No glue needed. But this should be done once the handles are properly attached to the bodies.
The cover is fixed to the main body with 4 identical screws (black-painted 3.0 x 15mm). Do not tighten the screws too much or you will break the holes and you won't be able to keep the parts connected to each other.