Aluminum Flywheel Warped

My Duster has a McLeod B&B clutch and a McLeod aluminum flywheel. Out of the blue one day the clutch just stopped releasing cleanly, and I could not get the trans into gear without shutting the engine off. Finally pulled it apart this weekend, and found that the disc had chewed into the friction surface of the flywheel about .04" !

I am assuming that the aluminum flywheel and or the steel insert warped, and was causing the disc to drag. There is also a pattern on the pressure plate that matches the pattern on the flywheel.

The car is has a 340 with a 557 purple cam, ported heads, and is street driven only.

I may throw the flywheel back on and indicate it, to try to determine if it's just the insert that is warped, or the flywheel itself.

Has anyone had an aluminum flywheel warp ?

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