I built a FlameWheel 450 V2, APM2.5, CN06 V2.0 GPS, 915Mhz Telemetry, E70 sonar. V2.8.1 Quadcopter in “X” configuration. I mounted two(2) 2200 3S LiPo’s outboard (see photo) on the lower frame. Quad is a little unsettled on roll axis. Do I need to mount the batteries on the machine centerline or can I tune PID for the roll axis to eliminate the quirkiness? Any suggestions on what PID to change?