I put on a new set of DR tappered long necks yesterday. After i changed the set up to accomidate the switch to tappered strings, i noticed a few things: -The string tension is alot tighter than it was with the old, standard strings. -When i play a note, it sounds like there is another out of tune note playing at the same time, even when i mute all the other strings. anyone else have these or similar problems? anyone know what to do?