Hey Chris,
I used the form you use on your deadlift video (more back, less leg compresion) and was able to move my deadlift from 100kg to 130kg
Previously I've found it difficult being tall (6ft 6") to crouch really low at the start of the deadlift and get the bar over my knees, and so I'd resorted to doing Suitcase Dumbell Deadlifts.
By bending my knees less and 'putting my back into it' I found it far more comfortable.
Keep up the good work mate.