Let’s don’t go blaming your tendons just yet.
You’re benching almost double your BW–a tremendous accomplishment. However, it suggests to me that the lion’s share of your Chest workout time/energy has been dedicated to flat benching. Many guys (including me, at various times) get caught up in improving their flat bench, and treating other aspects of Chest training as ‘ancillary’ or ‘supplemental.’ This can result in the physique you have, ie, one in which the upper chest is lacking in comparison to the lower.
So before you conclude the problem lies with your insertions, try this. Consider the intensity and enthusiasm with which you approached flat-bench work throughout your lifting career. Then, make the conscious decision that, henceforth, you are going to bring that same level of intensity/enthusiasm to upper-chest work. In other words, invert your approach: Treat incline bench as your main Chest movement, and the flat bench as supplemental. Get as jacked up about inclining as you’ve always gotten about flat-benching. You do this for a while, and I’ll bet your tendons/insertions will suddenly seem a whole lot better. Of course, all this is assuming your desire to balance out your chest development outweighs your impatience to reach your goal bench of 405. Good luck.[/quote]
Eyedentist: You are completely right on a number of counts. It is true I have severely neglected upper chest work by having it more as an afterthought after spending most of my energy on flat bench. 2-3 sets of incline bench presses (after flat bb bench and weighted dips) as a last exercise and I would call it a day - and not even consistent at that sometimes would skip incline dumbbells for extra flat dumbbell work.
Then again I have always believed that you can’t preferentially target the upper chest as both the clavicular and sternal portion share a common origin of insertion. Then again, there could be some counterargument at this regarding the different innervation of motor units across the muscle (targeted by different exercises) plus the anecdotal evidence by experienced lifters that corroborate with what you say.
Thanks very much for the input, I will indeed prioritize incline bb press and see how it goes.