i feel the same way with my left and right bicep.
all i can think of- and its probably wrong- is that either your form is not good enough on your bad leg, because the weight you are using may be too heavy. possibly if the weight is too heavy, your not doing the exersise correctly, but it may be just right for the good leg, so you are basically training the good leg, further, but just wasting time on the bad leg, causing further differences, and the other leg not getting worked.
wew, i suck.
all i can think of- and its probably wrong- is that either your form is not good enough on your bad leg, because the weight you are using may be too heavy. possibly if the weight is too heavy, your not doing the exersise correctly, but it may be just right for the good leg, so you are basically training the good leg, further, but just wasting time on the bad leg, causing further differences, and the other leg not getting worked.
wew, i suck.