Can anyone explain the purpose of the plate that fits behind the flywheel that is then sandwitched between enging and bell housing? My 351W had an auto box and the plate that came with it doesn't quit fit correctly. It lines up with both the engine dowels and the engine to gearbox bolts, but the plate passes across the starter motor position thus preventing the fitting of the starter. Is there any way I can modify the plate or do I need to source a new one?
BTW - Picked up my chassis from DAX on Saturday, itching to get going.

Any help would be appreciated.

Brian H