Spent time trying to determine best way to mount the SV-220 box. May just use some rails between the subpanel ribs. Also fabbed an angle to support the aft of the Avidyne nav tray. Need to determine if I want to rivet it to either the tray or the subpanel. Lot of time in the shop with not much done. Watching too much foootball while trying to work. Haha