jared1:
I have the Isspro Gauges and thermocouple in my
manifold. On mine, I inserted the thermocouple into
the hole in the manifold and pushed it down gently
until I hit the "bottom". I then came up about 1/2"
inch. On mine, that was about in the center. You
can "measure" the exact depth on your thermocouple
probe and adjust accordingly to get the "exact" center
point.
Hope this has helped you.
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John_P