u/Elmobutlarger

ive been playing alto for a couple years now and (re)started playing bari. ive been having a super hard time switching from low A (with the thumb key) to B and reaching over the palm keys to play B at all. im playing on a cannonball b5 and i was wondering if theres anything i could do about that. are my hands just too small?? is my pinky too weak? are the palm and pinky keys just set like that on this model?