Replying to Can't get passed thigh burn

Hey guys,
I've tried skiing maybe 5-10 times now after snowboarding from many years and I really like it, moreso than snowboarding, however I just can't get passed the intense quad burn that comes with it. I have 186 Armada ARVs with recommended mount spot, and I use very stiff boots. I'm thinking maybe it's cause I am too overweight? I am 235 5'10''. I don't really get much burn when snowboarding but for some reason skiis destroy me, I can't even do one run without stopping every 20 seconds and propping myself up for relief. I even did a lot of strengthening exercises before my last trip like wall sits, and even though those seemed really easy, skiing still destroys my legs. Anyone have any advice? I really hate throwing in the towel and going back to snowboarding just because my legs can't tolerate it.