So lately my cars transmission has been acting up. About a month ago when racing a friend i missed second gear, and it grinded. Well ever since then, just about every time i shift at wot (6k rpm) now, it will grind nasty and most of the time wont go into gear, If i shift at any rpm below 6k its fine and will go in fine. So im pretty sure its the second gear synchro. So after that i decided to take it to the dealer. Before i actually took the car i took off my jlt cai and returned it to the stock tune just so they wouldnt say it was "highly modified" or watever. On the way there i tried to make it grind and couldn't make it do it if my life depended on it. I still took it, and of course, they called me back the next day to tell me there was no problem found. So i picked up the car, put the intake and tune back on, and grinding came back. I installed che k member brace with torque limiters and didn't help at all. Why does it only grind with the CAI and Tune.What do i do now?? Can i just replace my synchros?? Or do i really have to get a new transmission?? I could also take it back to another dealership but how would they ever find out if it only occurs at 6k rpm. I dont want to tell them that because then theyll say that its "abused", and wont fix it. What can i do?? I hate not being able to shift into second