Actually favoring one leg over the other in normal (two legged) calf raises can lead to bad habits when exercising. And as stated, you are conscious of using one leg more than the other. Deliberately leaning on one leg to give it more work is not the way to go. Might try a better focus on the calves for awhile, using single legged calf work. This will insure an equal work load on each calf, which inturn can give a more muscular balance. Of course, by nature, one side (usually the dominate side) can be a little larger than the other. Might avoid two legged calf work of any kind (for awhile) and just do the better focused single leg calf work. One of the better calf devlopers is the one legged calf raise on a high block, holding a DB in hand. Try for speed and a full contraction of the calf at the top position. You will not need any extra calf work.
Turning the toes in or out has had a negative affect on some trainee's knees/joints. May not be the wisest way to do the calf raises if a potentional injury is to be avoided, for some people. A natural position of the toe settings can give better development anyway, if worked hard and often. Good Luck.
