Took my rocket in to the dealer on Nov. 14 because my stepper motor had quit working, not really a problem but wanted to have it checked out. I've had the 386 tune for about 2 months, installed w/cam chain replacement, with no problems. They also adjusted the TPS at this time also. So the mechanic hooks up the magic wand to the bike and works the stepper, just needs adjustment. He's looking at some differernt things on the hand held and notices that the #3 throttle body is out of sync. It only takes an hour to align, most of that time is taking everything apart and putting it back. Then he says that they got a new tune in last week and he would load it on. I asked what was different from the 386 and all he knew was that it addressed the idle situation more. The bike has been great so far, no problems what so ever. When the bike is started the rpms go up to about 1800 for a few seconds and come right back down to idle, like its suppost to. The idle has never been steadier.