I wanted to remove my relatively new SRAM RED eTap AXS crankset from my bike and I'm having problems trying to loosen (meaning: being unable to) the main 8mm hex bolt on the drive side, the step shown here and here (they are using/showing Force / Rival cranksets but it's the same for the AXS one).
Now the crankset has been on the bike / bottom bracket for maybe.. 2-3 months, at most. I tightened it down originally to 54Nm as specified on the outer lock ring with a torque wrench but now, no matter how hard I try rotating the bolt in the other, counter-clockwise direction... it doesn't move one bit.
I have tried using a 30cm lever and also a 60cm lever without success.
Is there any tip, particularly 'good' or efficient way to do this? I tried it in the bike stand trying to hold the crank arm/pedal at 3 o'clock position while the wrench being on the 9 o'-clock position and nothing, the other way around (hold the pedal) and nothing and maybe someone simply knows from experience what's the best way to do this without going too crazy.