Greben "Synch"

[Ceremonial_Melon]

Anyone found the bind for the "Synch" button? I find that button really hard to hit while using track IR since that latitude knob is right above it and about 40% of the time I end up snagging and accidentally rolling the lat knob. I think the tooltip reads "Greben Mach"

[FubarBundy]

I've been looking for this too... no joy so far