i installed my barton with the flat stick and love it, but it did chatter a bit in 2nd and 3rd under mid to WOT. I havent done the dynamat yet but i thought i would share what i have done and it took 75% of the chatter away. i took some regular grey silicone and put it on the threads of the shifter and a little inside the flatstick. i took it for a drive right after putting the silicone in and it didnt seem to help alot, but after it dried i have almost no chatter anymore.
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