Convertor help

[dragracerray]

It is very possible that PTC did not make the last change to the old converter. If so the stamped number is meaningless. I would try to learn what you can from the broken converter. If you don't know who changed it last send it back to PTC, cut it apart, and see if they can determine how it was built. I would agree from what you are saying that you need a tighter converter.

[Adger Smith]

With the MPH down I would say the converters are too loose (% of Slip not stall) compared to the broken PTC.
I like the idea of sending the broken converter to Lane and Kenny at PTC to cut open and study. There is a lot more to getting a converter to work correctly than just getting stall correct. ( Fin size and shape and angle, stator degree and back angle, ect) Like said earlier Your broken converter may have some changes that the numbers don't reflect.