Full Teardown and Rebuild.
http://profile.imageshack.us/user/carl13671/
1990 DT125R Sm'd
Piccys - http://dt125r.activeboard.com/t40415921/1990-dt125r-sm/
1989 DT125R (offroad)
Piccys - http://dt125r.activeboard.com/t43040164/89-dtr-into-a-true-offroad-bike/