2006 Crown Vic. Just got this car. It is ex police car with only 38 k miles. It seems like every morning the transmission shifter doesn't want to move out of park - it won't budge. I am parking on essentially flat ground. Tried several things - turn the wheel, pull wheel up and down, no change. Apply the brake hard, no change. Apply and release the parking brake no change. Then suddenly it seems to shift easily. Is it the shift solenoid or do you have any ideas?