FX on track 2 ,4, 6 only hear fx on tr2

Not sure why I cant hear track 4 and track 6 FX using AB and neighbour from tracks 3 and 5.

Any ideas?

Can I only have reverb on 1 track etc?

Ahh I am a noob and forgot to trigger!

I highly recommend you search the old forum at http://elektron-users.com
A lot of valuable information there.