Bench press mechanical issue

[throne6677]

Recently, my bench press has been somewhat crooked. I cannot figure it out. The only time the press is linear is when I have a mirror in front of me and can see the movement of the bar. Otherwise, it always seems to be uneven. The left side will trail the right side on the eccentric as well as the concentric. I tried posting a video but it won't let me. I will try to post it to YouTube and then provide the link. Thanks

[osu122975]

i've seen guys w/ shoulder issues have that problem or trying to protect an old pec/shoulder injury.

[crazy]

2 second pauses every rep for a while should even out.