ehh.. doubt this will help due to the weirdness of this situation but check anyways.. My buddy a few months ago finished his swap & kept havin tranny problems due to the fact that he wasn't getting the correct amount of pressure in the hydrolic line. Don't ask how in the world this happened but thats what he said his conclusion was.. i'll have to ask him.. because he said that he fixed something dealing with the hydrolic line & hasn't blown through another tranny yet..
my best guess would be bad luck! sry