I wonder if the OP is missing the simplest and most logical explanation.
Namely that his new "French" BB is really Italian".
This would be consistent with all his observations, and is easy enough to confirm with the naked eye.French and Italian BB threads have very similar major diameters, so the OP can use his known English as a basis of comparison, and the similarity or difference will be obvious.One of the problems with trying to help people on the forum is that we're stuck with the information they present. Poor, incorrect or incomplete information has everyone scrambling so solve a mystery, when none in fact exists.Sometimes it can elicit a poor or counterproductive solution, such as retapping a RH thread to LH.
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