When I did the tranny swap I blew the cooler lines out with air to make sure there wasn't a clog. I have less than 500 miles on this tranny since the swap. The lines shouldn't be clogged again. And I have an external tranny cooler, the lines go into the radiator first and then the external cooler. Are you saying I should unhook the lines to the radiator? Bypassing it and only use the external cooler?