Okay, so I finally got my mustang tagged and driving. I had a serious issue with grinding going into 1st and 2nd. Even with the pedal completely smashing into the floor it would grind pretty bad. Figured the cable needed adjustment. I purchased a firewall adjuster and new quadrant. Still happened. Bought a new cable. Now with the new cable, 2nd gear grind is basically gone(except on downshifting), and 1st still grinds, but not nearly as bad. Not sure what my next step should be. The previous owner of the car had rebuilt the tranny and installed a new clutch. I'm slightly nervous he didn't know what he was doing. Thanks in advance.