Well I think it depends on which receiver version you are using.

If DSM-X, then the fades don't mean to much other then they should be fairly equal.
Frame loss and Holds are very important and indicate a problem.

If DSM-2 then the antenna fades have merit. If the fades are not equal or high in DSM-2 then re-position the sat receivers for lower results.
Again as in X version Frame loss and Holds indicate a problem and should be checked out.

Dean