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This is a response from pandamidi.com on this question

No, our security schematics allow only one to one communication. But you can easily split your midi signal with a midi thru box and then you can use two transmitters to send wireless signal towards two receivers!

Take a look at this video. (works for both NuEVI and NuRAD) .. https://www.youtube.com/watch?v=9IcX7zWuxpU

Let's try something simple at first and then if is not working, it could mean something less simple (but certainly fixable) ...

Can you determine if the hex nut next to the offending roller is loose by chance? ... If so, are you able to tighten it and test again?

The NuRAD/NuEVI does not have a way to tell by itself what battery type is installed, so it’s a manual setting in the EXTRAS menu, BAT TYPE. For LiPo battery (which indeed is installed in your instrument) it should be set to LIP for correct display of battery level.

The bottom compartment of the NuRAD has two knurled thumb screws that can easily be removed to investigate the location of the LiPo battery system. For base models, this compartment contains space and ability to insert standard AAA batteries, Otherwise, you will see evidence of the LiPo battery inst...

With the LiPo battery solution installed, the NuRAD or NuEVI has got three positions on the power slide switch instead of two. The switch positions are: [ • ] [ ] [ ] Leftmost position – Power ON from battery, battery time 15+ hrs [ ] [ • ] [ ] Mid position – Power OFF, battery charge when USB is co...

Have you first tried reviewing this documentation? http://gg.index.hu/pandamidi/MidiBeamGuide20.pdf

What wireless midi system are you using?

When using the lever for CC or glide control it's unidirectional, working only in push forward/down direction. The positive/negative thing only comes in use for the vibrato, and then it's handled by the vibrato algorithm (and corresponding vibrato settings), and not at all affected by the threshold/...

In the newer versions (firmware) there is no enable in the special menu (both NuEVI and NuRAD) but controlled by polyplay mode setting. mode: off disables special key.