Yea, I sent Phil an email to find out. The listing of parts seems to suggest with the MC that you can use the silver Lucas one with the correct length rod (the white one) in place of the black one for the older models... but those notes under the parts are pretty cryptic for a lay person such as myself.

I am pretty sure I put my old slave and the replacement side by side and they looked the same. I also read something though in an old post about someone opening up two slaves and finding that one had a spring inside and one didn't... I wonder if that has anything to do with the differences.

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