I have that problem in general because I'm a shortie. I've adjusted my chair all the way up too, but find it helps sometimes to sit on a pillow (or two) then put a block/foot stool/lego bin under my feet.
Whenever I make fudge, apple butter or anything that requires a lot of counter time I have to fold up 4 rugs to stand on to keep from whacking my elbows on the counter edge or pan sides. It helps with shoulder tension a lot because I don't have to worry about hunching them up to clear stuff/reach stuff/work.