These are links to the 2 sets I have recorded, the first set is my most recent at 405 where my lower back definitely rounds and my knees drift forward a bit, while the second set is from about 6 weeks ago when I first brought SLDLs into the program .
https://drive.google.com/file/d/1q3I2cDth8qPsnTsoCWzJSe6c0v-yw9AB/view?usp=drivesdk