Trap Imbalance

MetHerInSolas

In the recent week(s) I have notice that my left side trap (below my neck) is bigger and more developed that my right side trap; also my neck on the right side has been slightly sore/strained.
I am right handed and stronger on my right side.

For the last 4 months or so I have been following this schedule for 4/5 days a week e.g. Monday (Bicep/Shoulder/Back), Tuesday (Cardio), Thursday (Tricep/Chest/Legs), Friday (Cardio) sometimes do either weights/cardio on a Saturday depending how I feel.
Below are the exercises I do for these areas:
Bicep (Hammer & Dumbbell Curl)
Shoulder (Shoulder Press (Barbell), Lateral & Frontal Raises)
Back (Lats, Cable-Row & 1-Arm-Row)
Tricep (Skull Crushers, Bench Press Close-Grip & Kickbacks)
Chest (Pecs machine, Chest Inclines & Bench Press)
Legs (Curl, Extension & Press machines)
Cardio (Rowing/Bike/Cross Trainer)
I have never had any injuries on my right trap/back/shoulder.

Any ideas (exercises) I might do to resolve this problem?

diegowhite

Do Shoulder shrugs with dumbbells or cable handles in each arm, focus more on the weaker side until it's brought up on par with the other side