I just bought a new mouthpeice because I lost my old one. Does anyone know a way to get it broken in fast because I have to use it in a competition tomorrow.

I here that if you run water through it for a little while and if you sorta take a cleanig brush or even something like a end of a plastic pen and rub/shake-move it around,in and out a little,to make it "scuffed" inside as for a normal wear and tear that happends over time. I dont know if thats a lot of help but...