I have a t5 transmission with 95,000 miles on it. Ive had trouble getting the car into gear when i shift fast, so i figured the synchros were going bad. The transmission also makes some chunking noises, when im driving and i puss the clutch in i can hear them. So i have a place rebuilding it and they say that cant see anything wrong. Should i get them to put new synchros in it anyways?