automatic gear box problem on a mitsubishi pajero

[big davey]

HI CAN ANYBODY HELP ME I PUT TO MUCH OIL IN THE GEAR BOX ITS A 2.8TD MITSUBISHI PAJERO AND I PUT IT IN REVERSE BUT IT WON,T MOVE BUT WHEN I PUT IT IN DRIVE IT MOVES OK HAS ANYBODY HAD THIS PROBLEM WITH A PAJERO IF SO HOW DO I FIX THE PROBLEM ALSO I HAVE TOOK HALF THE OIL OUT BUT STILL DOING THE SAME.