722 remote #2 not working correctly

[nigel_miguel]

My 722 does not work with the 2nd remote. I've tried changing the remote address. I can turn it on and off sometimes but not always it seems delayed. I've also added a 10dB attenuator and still the same. Is my cable run to long
Any help would be appreciated
Merry Christmas

 

[KAB]

Had it been working OK?