my d16 tranny is definitly messd up. third gear used to gring from second, now 3rd to 4th grinds! all the other gears are fine. i heard that it is most likely my synchro, is this true? i also heard the a bent clutch fork would do it... any advise?

 

its your syncros..get a new tranny or you can drain the tranny fluid in ur transmission and run syncromesh and it will help it out a lot. if you don't have enough to get a new tranny. And to fix the syncros in your transmission will cost more than a whole tranny. So just get a new one.