The only tip I can give you is too check in a mirror and make sure your aren't pronating your wrists or elbows that might pull on those lats too much. I know for me that is something I am constantly correcting and initially I had pain everywhere.
Lani says go for the quiver but I am not sure cramping is a quiver?
Rhonda Kontos , BS, MSW, LSW Weight loss, over 27 lbs, somewhere around 50". Over 14" in just 5 workouts at 2012 Fall Retreat! I am down to a loose size 4. New job and new body, life is good! This is the year for a new me! All our dreams can come true, if we have the courage to pursue them. Walt Disney