I bought a 1998 mark viii lsc ce today. So when I drove it it drove nice little shutter when shifting once. I notice the transmission Fluid was low so I added some in park car was warm. I drive it about 5 miles to where I was parking it when I got there I put it in neutral to rev it then wait ed for the rpms to drop then put it in drive didn't want to move gave it some gas then will move . Go's into reverse fine. Checked the fluid again and added a little more still didn't want to go. Also car sat for 6 months. Is it possible it's over full? But not showing it. The shifter also feels weird . 140,000Like the car and want to keep it but might try to get my money back. Help please .