Yeah like bubble said, you have to switch it up if your keeping faithful to your program. My coach swiches up our routines every 3 weeks. The first week you feel dead when you leave the weight room, but after the third week the set's dont seem as bad even though you may be doing more weight and reps.
And 405 lbs, almost got to double your body weight, could you even get your elbows to touch? haha