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I have a nice piece of Granit that I am going to use for the base, just haven't gotten around to it yet, should keep it from moving around. have to drop it off at the monument makers to have it cut & drilled.
https://www.officeofsteamforum.com/general-discussion-scale-model-gas-engines-hit-miss-throttle-governed-non-compression-etc/new-m91-running-in-its-new-stand/msg28557/#msg28557