If I can crack the weight off the floor 99% of the time I will lock it out. My weakness is at the bottom and to address this I have been doing all my deadlifts off 3 to 4 inchs of rubber pads. My question is will this throw my mechanics off when I start deadlifting off the floor? I also do high pulls but instead of using 45lb plates I use 25lb to bring the bar closer to the floor making the lift harder. If it matters I deadlift sumo.