Shoulders during dips...

[The_Grinder]

I don't know if my form is off or what, but when I do dips, weighted or not, i reach failure because of my shoulders instead of my tris or chest. my shoulders arent really a weak body part either. is this supposed to happen? what could be wrong with my form to cause this?

i know my delts are going to come into play, but i still have a lot left in my tris whenever i am reaching failure.

[BIGFELLA]

it could be how or if you are leaning. if i lean too far forward it tends to burn my chest and delts a lot more than my tris. try to stay as upright as possible