My cheer bases say i'm too heavy?

ok so i'm a cheerleader(obviously,lol) and recently we have had this big break in cheer practice. When we get back to practicing all of a sudden my bases keep telling me how heavy i am,and it really hurts my feelings! And i only weigh 110 wtf?!?! I am constantly compared to other fliers and once "jokingly" i was told that they wish they had this other flier from a different group and i got really pissed but i was like fine whatever,and they said they were just kidding,but these girls aren't skinny so i don't think their weak...but anyways am i not holding myself right? Is there something i can do to make myself lighter? And i'm not going on a diet because i weigh less than i'm supposed to weigh for my current height,and if i lose anymore weight i'll turn sideways and disappear so.....any suggestions?