I spent end of season touring straight up black / red runs on shift.... I really really would have liked another level on the shift, then my buddy started joining me, he "collects" mountain peaks whatever that is named in english, he doesnt even bother with a single riser when he goes up, on his superlight skis/alpinist setup he kinda just "runs" up. he would do 2 or 3! laps up per my 1. skinning with mountain goats kinda kills your ego.
I'm stil not 100% on the shifts, but adjusting them properly seems to help indeed. I was 230lbs'? ish then