Everything works perfect, except TSS. I do have NP Power on same layout, but TSS stays at 0.

I'm using  3 fields on edge 820. First field is divided to guess my gear and w' bal, second field is hm #1, which has NP power, TSS and others and third field is hm #2 with speed, avg speed, current power, cad, hr, gradient...

How to get TSS to work?