Especially with a barb fitting, there's not much room for operator error, but I don't really care to get into a debate about threading AN fittings, so lets just agree to disagree on this one.
I've been thinking about tossing a stock oil-water cooler back on to combat my temps. I see just below 200F as well with my built trans. Even with the lower stall converter. I use the bed too much to toss anything in there, so I've just got an oversized front one, but possibly pairing it up with a Derale or BD unit like this would solve the issues.