Tim, I'm not surprised you're hitting big weights! Put up some videos when you get a chance!
And check your grip with the higher weights. Are you gripping the hell out of the bar when it gets heavy? Is that tightness running up your arm? I've had the same issue. Because of some nasty calluses, I've had to use a lighter grip than I normally would and all of a sudden.....no early arm bend, arms stay loose. It's natural reaction to use the death grip when going heavier, I'm finding it's hard to loosen it up! Just a suggestion