dkm, no need to be so unsure about your FTTs! A lot of those were FTTs that you have marked "FTT? no..." were indeed FTTs, they just didn't lead to a BO.
Well, I may be incorrect thinking this but I only consider an FTT to be a genuine FTT if it is confirmed by a BO. My "FTT?" is a point where I would probably have required a decision to reverse, having made an incorrect identification. In retrospect, they appear to be flaws through which I should have held. My "flaw" recognition needs improving