Lat Imbalance

My right lat is bigger than my left, what can I do to fix that?

Unilateral lat pulldowns and rows. Istead of a set of 10 for each arm, do 2 reps for the weak arm to every 1 rep for the strong limb. Mike Mahler did an article on this exact topic (correcting bilateral strength imbalances). It’s several months old, but a search at the main site using his name should bring it up. It was a refresher course article.