CM 871 Injector Issue

[graysonlogistics]

So, I have an 871 that is running rough, hooked up the computer and did the cylinder test and the front bank failed. I swapped the fueling actuators and did the test again. The front bank failed again. It did not follow.

Next I did the cylinder cut out test. It ran on every cylinder by itself except for number 3. I thought that that was a tell tell that the number 3 injector was bad.

I next did the injector leak test.... I got bubbles during the cranking and proceeded to bar the engine over like Rawze video demonstrated and per the service manual. After barring the engine over, the bubble occurred between B and C which indicates #1 injector was leaking. No other injector leaked.

Why during a cylinder cut out test will it Run on #1 (with a bad injector) die on #3. Is it possible that injector 3 is stuck shut and not leak?
Is the cylinder cut out test trustworthy for injection issues? Is the leak test affirmation of injectors good or bad?

Any input Appreciated