Hi, i got a rockhopper hardtail 21inch a while back and since i have had it i think it may be a little too big. I am 6ft. I lean heavily on the handle bars which makes the palms of my hands sore after a ride and there is only about 1 or 2 inches of stand over hight. Is ther anything i can do to make the bike more comfortable to ride or should i just sell it and get a smaller one? I also have a fsr xc medium and that feels like the perfect size. What is medium size in inches?