Replying to Can my burning thighs be fixed by adjusting the forward lean?

quite often if I go fast down even a green my thighs will often start burning(have to avoid a lot of rocks as there's a TINY amount of snow where I live, barely enough to open), could this be fixed by adjusting the forward lean on my boots?(hot doggers currently with 2MM) and if so would it be better to put them forwards or back? or should I take a lesson with an instructor to get my stance right? and how many lessons(in hours) do you think it'll take to get my stance sorted?