Ive been working out for awhile now and ive starting noticing that my lat on my left side is developing not the way it should. wheras my right side is good. I tend to feel the burn in different spots on both sides...
I also have a problem with always feeling my shoulder being worked when i bench, curl, do triceps, and back. Im keeping every thing uniformly or so it seems...ive tried lowering weight and focusing on form but i still have this problem...any help?

the only advice i can give is to start working with DB's and seeing if you can focus on one side more to bring it up to par.

When you say that you've been working out for a while, how long is that? six months? ten years? thirty years?

You may be correct in assuming that it is a "proper form" problem. Usually, by continuing to workout, these things will fix themselves.

Your shoulder hurting during bench is a sign of potential rotator cuff and.or tendon issues. You may be overtraining. How often do you workout and what does your routine look like?

Also when benching, bring the bar to your lower chest/upper abs NOT your nipple area. This will take much stress of the shoulders, and you also should be able to bench more

Id just concentrate on form, and yea how long have you been working out?

Make sure when you do rows/pulldowns, etc that your elbows are pulled towards you in the same fashion. Sometimes one elbow might flare out more than the other, which can make differences in how the muscle is stimulated, which over time can create an imbalance.

Like the others have said, focus on form.

You say you feel your shoulders are being worked, when you bench. You could have a shoulder dominant technique, I suggest looking over the technique article sticky on this forum.

For biceps curls, keep your upper arm still, the elbow is the only thing that should be moving, same with triceps.

As for back what exercises?

Ive been working out for about a 1 1/2 off and on and i usually workout 4-5 days a week...

Routine
Day 1: Chest and triceps
Day 2: Biceps and shoulders
Day 3: Back and legs
Day 4: Off
Day 5: Chest and triceps
Day 6 and 7: Off
* i dont do these in the same order every week though but this is how i work muscles on certain days.