I guess there is kind of a double whammy with MFD's. You have the solar magnetic interference and you have the L-rods. Both these can add significant "play" sort of like loose steering on a vehicle.
Whatever the case, if you can't use the rods you won't get too far. I tell people to learn some form of meditation, but this has fallen on deaf ears. "Don't need that.", "Don't have time.", etc., etc.
You'd do well to avoid the rabidly biased naysayers unless you are trying to convince yourself they "can't possibly work". I never understood why anyone would believe someone who can't use the L-rods.
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