Pioneer is marching a few holes from what they had wanted in horn and guard. But at the same time they also turn people away because they do not have the funds to march a full line.
For example Pioneer has 6 contras and that is all they will march because they dont have the money for new horns.
Also Pioneer takes in and teaches people how to play horns that do not play them primarily. Im sure this hurts them but at the same time it is a body on the field.