so I put a used ys1 tanny into my car(96 ek civic) and before i put iit in i opened the tranny case to look and make sure there was nothing wrong and it looked great! so i put it back together put it in my car and and the tranny works great except it wont select 4th gear (makes a loud grinding noise when i let the clutch out and wont go in). im about to pull the tranny out and fix it. SO...............my Q? is do I only need to replace the 4th/3rd gear/syncro and selector or do i need to replace a shift fork or somthing??????? im experienced at working on tranny's i just want to make sure i fix the problem before i put it back in my car.............thanx!!!!!!!!!!!!!!!!!!!!!!!!!!! HT i know you guys can help me