The last time i maxed was in high school. Im 25 now. My incline use to be horrible until i started doing 3 sets of 10 at the same weight. Once i started that my numbers went through the roof. I can now manage 275x10, 275x12, and 275x15, then 3-5 rest pauses at 315.
My guess is that i could probably manage 375 oncline, but 405 my be a little troublesome. I can manage 405 on flat with great control, so i doubt if i could get it.
One caveat though...i am built for strength in my chest, i have a huge barrel chest. So, the weight tends to come easy for me. However, 405 on flat for reps isnt high enough yet, but i dont want to risk injury either.
If i were in south florida on vacation...i would definitely stop by and do a marathon training session with you. I am in pittsburgh, so kinda difficult. Im intend to train with Jkurz1 and Bigdho since they are in my vicinity.
Keep training hard.
wick