There are a few different techniques for playing the guitar hero controller. There's the "thumb" technique, where the player pushes down on the strum bar with his/her thumb to play a note. Some players grasp the bar between the thumb and forefinger like a pick, rocking it up and down to play the "notes". Some (like myself) actually strum the "strum" bar", brushing it with my fingernail as though I were picking an actual guitar string. Still others use an actual pick (you know, for heightened realism) to play the strum bar.
Those of us in the last two category have had to fight an enemy most foul: the double strum. When you strum the bar, it will play the note, but then spring back and play a second note on the rebound. The harder you strum, the harder it bounces back: it's especially bad on the up-strum. Once you get into hard mode, it's a near-impossibility to get through without strumming up and down, and passages that are played perfectly will get you booed off the stage.
The problem is this: the strum bar sits right on top of two switches, one for the up strum and one for down strum. The only thing restraining it from playing the second "ghost" note is the weak spring inside the switch itself. We need to add some padding to the switches that will stop the bar from pressing on the opposite switch on the rebound without interfering with a normal strum.
Those of us in the last two category have had to fight an enemy most foul: the double strum. When you strum the bar, it will play the note, but then spring back and play a second note on the rebound. The harder you strum, the harder it bounces back: it's especially bad on the up-strum. Once you get into hard mode, it's a near-impossibility to get through without strumming up and down, and passages that are played perfectly will get you booed off the stage.
The problem is this: the strum bar sits right on top of two switches, one for the up strum and one for down strum. The only thing restraining it from playing the second "ghost" note is the weak spring inside the switch itself. We need to add some padding to the switches that will stop the bar from pressing on the opposite switch on the rebound without interfering with a normal strum.
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Signing UpStep 1: Disassembly
The first step is to disassemble the controller. Remove the neck, the WiiMote retaining cover, and the faceplate. Place the controller body on its back and remove the four screws around the neck slot. Flip the body over and remove the nine screws using a #9 torx bit. Note that one of the screws is covered by a warranty sticker warning you that the warranty is void if removed. It will have to come off to take the controller apart. If you're having reservations, remember that throwing the controller against the wall in frustration because you can't get past "Raining Blood" due to double strum also voids the warranty.
Once all the screws have been removed, you should be able to pull the back cover off and reach the delicious innards. Make sure you note how the strap buttons are attached and keep track of them.
The offending switches are under the central and largest circuit board. First, remove the three screws holding the analog thumb controller. Remove the four corner screws from the strum bar circuit board and lift it up (with the thumb controller board and neck connector).
Once all the screws have been removed, you should be able to pull the back cover off and reach the delicious innards. Make sure you note how the strap buttons are attached and keep track of them.
The offending switches are under the central and largest circuit board. First, remove the three screws holding the analog thumb controller. Remove the four corner screws from the strum bar circuit board and lift it up (with the thumb controller board and neck connector).
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http://www.instructables.com/id/Guitar-Hero-Fret-Buttons-Mod/