Overheating issues

If you could get a temp at the top and bottom hose fittings, preferably, but the hoses will suffice.
With the top hose being 200*? at the top going into the rad, it needs to be 150*-ish coming out the bottom fitting, shedding 50*s, that'll work, and rad is doing it's job., look elsewhere.
If coming outta bottom hose at 175*+ is troublesome, and rad isn't doing is job, good place to start.
Logical process of elimination.
Don't chase complicated,vague stuff before fundamentals, that can be costly and disappointing.
Read some previous years "overheat" to view frustration, perhaps have fewer " frisbees " in your future .
Good luck .
Perhaps check the temp at the top/bottom hoses of your daily driver for reference.