I have a 68 charger parts car that sat out in a pasture for 30 years and have been trying to get the passengers door open with no luck. From what I can hear, the linkage is good but the latch is frozen on the striker. I have tried spraying penetrating oil in from all angles but I don't seem to be making any progress. Is it time to get out the torch? Any ideas would be greatly appreciated. Thanks!!!!