I am seeing improvement, I would honestly keep the weight where you are able to get a full stretch and focus on the contraction. More than likely you put too much weight up and use more muscles to lift in then your chest.
I just read your routine, too much weight for your chest development IMO. No way you are putting up 225 on incline and doing it properly, if so the chest would show it.
I also think you are doing to much on chest day and this is also a problem.
Honestly, who gives a **** about the weight...you want to look like you lift 500lbs, not actually do it.
Drop the weight down, focus on getting the full stretch and contraction. Don't lock the weights out, when you do this you relax and we don't want that, we wanna keep the muscle engadged at all times, so stop short of locking out.
I think Jay Cutler has one of the prettiest lifting styles, he focuses completely on the stretch and contraction and not the weight, he isn't as strong as Ronnie or Johnny Jackson but he sure looks like he is.
If I were you I would switch it up and do this
3 Sets - Incline Barbell (one or two good warmup sets getting the full stretch and ROM)
3 Sets - Decline Barbell (don't shy way from this and have someone help you with your form)
3 Sets - Flat Barbell
Incline Flys using the cables...grab a bench and once again keep the weight manageable to where you can get that full stretch and ROM.
Sometimes less is more....honestly give it a try and post pics...I guarantee we will see results. My chest has been my worst body part forever, I sucked it up and haver someone push me and help me keep my form. My chest is popping out and filling in now.
Jay on Flat
http://www.dailymotion.com/video/x2h...-presses_sport
Jay on incline:
http://www.dailymotion.com/video/x2h...-benches_sport
Jay on decline
http://www.dailymotion.com/video/x2h...-benches_sport
Jay on Pec Deck
http://www.dailymotion.com/video/x2hzn8_pec-decks_sport
No matter what he doesn't lock out and keeps tension on his pecs at all times. I always liked watching him lift, one of the best IMO.