A good guess.... and after machining those side housings, isn't the gas nitrading compromised???

Modifications do exist for stationary gears that "walk", but as I recall, they suggest it isn't really needed for engines that don't turn 9K. I think a groove is machined in the rotor and a clip holds the gear in place.

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Jake Gulick
CarriageHouse Motorsports
ITA 57 RX-7
New England Region
[email protected]