Played with this a bit today and some Qs for the fellow helpful owners.
Trying with the provided blue synergy velcro straps, with 6S 4500mah RoaringTop batts - did you have to mount long ways or did side ways work? Please share pics of your batt mounted with the velcro. Also have a Scorpion 4500 batt.
Did you use the provide synergy straps?
Did you apply velcro to the batt tray only in the middle to help keep the batts from moving? Not much other space to apply velcro.