Last night I noticed that my form may have been off since I started working out.

I saw a guy who is obviously good at bench press (Pushing way more than I do). He kept his elbows out instead of tucked in at his side. If you looked down on him his elbows would be directly under the bar. When I press my elbows are down...closer to my body.

What is the correct way? I tried it his way and by the 3rd set it seemed that I was able to push more weight. Normallyt by set 3 I am struggling. Not to mention my chest seemed to take on more of the lift instead of tris doing alot of the work.

Is this all in my head or did I find a glitch in my form?