It seems all of the 2nd and 3rd synchros are out in all of these 06-07's (just like mine). I swapped their peanut oil....sorry tranny oil with amsoil synchromesh and it seems to have corrected the shifting into third problem without it biting back. I suggested this to the dealer and they said..."no, no, no, all honda's are like that". Hmmm, just goes to show that most have no idea. For everyone else, i would suggest trying the fluid swap first and then take it to the dealer if there's an issue after that. I would have a bad feeling having a tech at honda pull the tranny apart. Once it's apart, it's just waiting for other problems down the line. If one person couldn't find the issue and someone else told you it was the synchros, that's a problem, it should be pretty obvious if not while they drive it, certainly while they look at it.
