Pointing Partiot dish at AM 22 problem

DEAR SIR
PLEASE HELP TO SORT OUT THIS PROBLEM
WHEN I POINT THE PATRIOT DISH TO AM 22 WITH MY OLD PROVIDER I GOT GOOD SNR AND GOOD INTERNET
BUT WHEN CHANGE TO MY NEW PROVIDER THE SNR ARE MOVE FROM -1 TO 11.5 NOT FIXED
THIS ONLY HAPPENED WHEN I USE PATRIOT DISH  WITH ANDREW EVERY THING IS SMOOTH
MY NEW PROVIDER ASK ME TO USE FILLTER BETWEN LNB AND CROSSBALL
SO PLEASE HELP ME