Sirui TY-70A plate
 

Anyone using the Sirui TY-70A quick release plate ?

https://www.bhphotovideo.com/c/product/1243748-REG/sirui_suty70a_ty_70a_quick_release_plate.html/BI/2855/KBID/3801

It's the plate that comes as standard with the VA-5 video head.

I need to know the distance (in mm) between the forward anti-rotation pin and the rear edge of the plate to determine whether it would possible access to the battery release latch on the underside of my Canon HF-G40 with the plate mounted or whether, as I suspect, I would have to remove the pin (looks like it can be unscrewed) and mount the plate further forward.

Cheers.