If you could post your leg workout that would be great. I honestly do push myself to the max with squatting and my legs with what I have to work with in our relatively small gym.
I have done 315 max but cannot get over that hump. I can maybe do 225 8 times, 6, 4. It might be a form issue. I have been trying to fix it by staying on my heals more. I don’t leg press, or other machine lifts because I don’t have access to them in my main gym but if I travel I can get access. Maybe if j incorporate them with better form, I will see an increase.