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,
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Throttle Brake Pedal Upgrade Kit for Logitech G27 G29 G920 Racing Game Wheel Modified Accessories|Replacement Parts & Accessories| - AliExpress
Amazon.com: GWNOWZZET Upgrade Mod Brake Pedal Spring Throttle Pedal Spring Clutch Pedal Spring Kit Fits for Logitech G25 G27 G29 G920 Racing Wheel 3 PCS : Automotive