Gun Stuck on Firing

Recently upgraded my battery to an 11v and had to swap the connector plugs ion my blaster. Was using it all day yesterday without an issue untill i switched to semi auto mode and my SLR just started firing full auto without even pulling the trigger and continues to do so whenever the battery is plugged in. Does anybody know why this is occurring and also any advice on how to fix this issue would be appreciated

Maybe the 3S battery has made the trigger switch get stuck engaged? Often the arcing in the trigger contacts gets them welded together… The trigger switch would be the first place i would be looking… or the switch wires melted together…