I'm going to sound weak for saying this but, the brake pedal on my Logitech G920 is REALLY hard to press down fully in a quick way, which makes heel toeing impossible,
How To Correctly Setup Your Logitech G920 G923 Brake Pedal - YouTube
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TrueBrake V2 - Brake Pedal Mod for Logitech G25/G27/G29/G920/G923 - AXC Sim - Sim Racing Products