F/O side skalarki att getter not working

[stephen speak]

I purchased the DCDU’s and attention getters off Skalarki earlier this year..I noticed that the captain side att getter works perfectly..however the first officer side one doesn’t..even though I sent the DCDU back to Skalarki and Karol tested it thoroughly..I have ran tests myself and all seems fine in the test..I put ANN TEST on the overhead panel..it doesn’t light up..I do a flight with CPDLC ATC..the c/s lights up but the f/o doesn’t..I am wondering if it’s some limitations within the FSLabs aircraft/HWI that’s preventing this..any idea??

cheers in advance 

steve