Take the TV2 remote to it's corresponding receiver (the 222k) then:
-Press system info on the front of the receiver (behind door on the right)
-On the remote, press and hold "SAT" until all the mode lights are lit
-Press any number 1-15 (making sure it's different than what is currently listed under the "secondary remote address")
-Press #
-Press record (may need to press a couple times)
The secondary remote address on the screen should now show whatever number you entered on the keypad, thus changing the remote address to something other than what your 722k's TV1 operates off of