My chocolate leg, the left one, was so chocolaty that it was causing me hip/back issues. I just spent a lot of time disciplining my vanilla leg by making sure the knee was not sticking out sideways as I pedal, making sure my hips remain level and stable and that my vanilla leg pushes through the cycle properly, etc. etc.
I got great results out of this after a month or so of discipline and riding 6 out of 7 days. Now the chocolate has swapped, I have to pay attention to make sure that my left leg is putting in at the same rate as my right. But the increase of power, speed and stamina that has resulted is really quite amazing. I would like to have been able to use a gym too but don't have a membership anymore and if I have spare time I'd prefer to be on the bike than indoors.