i just put a used front passenger door on my 850. with both the inside lock button and the remote lock button all doors lock fine, and when i hit the unlock button on the remote once, the driver's door unlock as it should, but when i hit the button again the other three doors unlock and immediately lock again. i figured the new door may have just been out of sync with the others when i plugged the door in. so to fix this, i unplugged the door and unlocked all the doors including the new door and put the plug back in. didn't fix anything! does it have something to do with not recognizing the "odd" lock, since i didn't switch over the lock from the old door, or is there just some malfunction in the new door's lock mechanism? also, if i manually lift the lock on the "new" door, the second unlocking press of the button unlocks all doors like it should.

!!!!!---insight please---!!!!!