You can just not send the missing packets, and the relevent sensors will have a warning which you can ignore. I have already done it from other devices.
No I am not mixing up my replies regarding the cam sensor. You have 3 cam sensors and the hawkeye has just 2, using one of the AVCS sensors to do the phase sensing too. By doing that you could free up an input.
A/C input
Re: A/C input
Aha - ok, see what you're saying now re: cam sensor. Thanks 
I just don't like errors showing in SCal , but if needs be that's what we'll live with. Will hopefully get definitive guidance from LR/Syvecs today.

I just don't like errors showing in SCal , but if needs be that's what we'll live with. Will hopefully get definitive guidance from LR/Syvecs today.