Bigbite retiming for T3s is setup and should work, T6 singles ADC gate timing is very tight... I guess this was known (delay on BB ADC channels is shorter than preferred).
AFAICT, the gate arrives roughly 10ns before a typical signal. I think I'm erring on worst case side here, but it really depends on internal delay in the ADCs and a couple cable lengths I'm guessing at...
I gather BB singles are not critical though, so we might have to live with this for now.
We're attempting to verify timing for e,e'p between LHRS + HAND now.