take the back off a doner vhs casette with a small philips screwdriver, and do the same with your org copy (making sure you keep the org taught) then transfer one set of tape to the doner tape unit, making sure the tape goes corectly through the guides i.e ball mounts (love that phrase). then re afix the casings back together and, hey presto, job done...tip...........take your bleeding time cause its a ballache, but worth it
