I've got a 1998 GT with a 5 spd and 94k miles. Recently it started to grind when I put it into fifth. It usually does it when the car is cold (ie. morning), but once i've driven it a little while it stops. I can usually double clutch and get around it, but sometimes it grinds anyway. It also started grinding going into second at high RPM (5k and higher). I've been told that worn synchros will cause this, but there isn't a local shop that will work on a manual trans so this is shadetree speculation. Please tell me I can just add some syncromesh and Lucas oil and be on my way. I'd rather not have to replace the whole trans. Sorry for the long post. Please help.