Small mod to FS-Lever to provide additional range to get flag under the new sensor.
I had an issue with the original assembly as designed by Prusa where the filament sensor was not registering correctly. Upon completing the upgrade, the filament sensor was seen when I checked the Sensor Status under the Support Menu. There is now way to adjust the sensor alignment. This alternate design provides two options that extend the throw for the filament sensor lever thus providing a more repeatable detection of the filament. There are two model, one has a 0.5mm extension and the other has a 1.0mm extension. The 1.0 worked best for my case.
Print in PET-G or PLA as instructed by Prusa for the other MK3s upgrade parts.
The author hasn't provided the model origin yet.