Grant Erwin wrote:

See http://www.tinyisland.com/JheadEngineStand.html for pix
descriptions & accounts. Flames to /dev/null.

Drawing http://www.tinyisland.com/images/JheadBoltPattern.pdf
has a vertical axis of symmetry, but doesn't explicitly say
so. (I realize the earlier thread probably did.) I wonder
if there's any good way to represent this on the drawing?
-jiw