Weak muscles fer sure
When you get back down to your ideal weight, it'll help alot.
I did this as an 'self-awareness' experiment to make me realize how much strain it actually does put on our bodies to carry around the extra weight....
Walk around the house with a 10 pound bag of potatoes for about 10 minutes. After awhile that 10 pounds seem like 40!!
Regarding the 'lead leg' feeling, I was told to do hamstring excercises.....
yeah

fun. But it did absolutely nothing to help my burning neuropathy pain.