Cannot remove the cassette even with the right tools

[idropboys]

Thanks for the tips.
My cassette remover does have a "guidepost".

The handle I used is only 20 cm long (7.87"). I better get a longer one.
I check that the max torque to lock the cassette is 40Nm. Based on my calculation, it means that I need to apply 200N force (~ 20.4 kg weight!)

Definitely get the big handle - mine is massive and allows the force to unlock it