I have a 64 Belvedere wagon and the front passenger side door is stuck shut. I've managed to get the interior panel off but can't figure out what's happening. It seems to be unlocked - I can move the linkage up and down. The inside handle moves the linkage to the latch as it should but it won't budge. Does any one have any ideas or do I need to remove the fender and get it off that way. Thanks for any help I can get.