Port my current M1 single plane or install the RPM Air Gap?

I did the pins with one piece of epoxy. Ended up passing it on to someone with a more appropriate application.
Read here of approx power gains but had no way of verifying.
If I were to consider another M1 for another engine I’d probably just open up the flange like shown in Dykem picture and radius into the runners vs. all that work to epoxy it.

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