[cudabnu]

I purchased a conversion flywheel for a 964 3.6L into my 80 911. I installed a new Sachs clutch kit and new ring gear on also. The problem I'm having is with the starter, I had a lightweight high torque starter that I used with the 3.0, but when I'd crank the 3.6, it would start turning over, then sound like rocks were getting ground up, then If I try again, it sounded like the gear was stuck, or at other times like the gear would not engage. I tried putting in my original used starter but basically got the same result, I then bought a remaned bosch starter, but it still does the same thing. That is where i'm at now, My next step is to remove the starter and start measuring where the ring gear is in relation to the trans housing, or is there something I'm missing? The ring gear was put on with the channel down on the PP, so the flat side of the ring gear is facing the front of the car.