Can not lower the incoming audio on Icom 706MIIG

[Constrainted]

You may consider to set attenuation trace:

Digirig mobile input attenuator

The audio from my FT-817 is too high and cannot be adjusted lower using the regular level controls. I took apart my digirig mobile to see if I could cut the trace between the ATT pads, but I do not see a trace. Does it come precut or do I just not see the trace?