Really nice looking tuner. You have a pure 50 ohm load, no need for a tuner. Probably, you're not able to tune out the reactance in the tuner itself. Maybe recheck that the circuit is wired the way it should be. I can't tell from the pics how it's wired. Also connect your load directly to the test analyzer to see if you get a lower SWR.
Part of your problem is that you're using an aerial analyzer, you need to use an antenna analyzer.
Fred