Is anyone aware of a "minimum injector pulsewidth" constant in $EE?

I ask because I've removed enough of my Crank VE vs TPS vs RPM table that warm starts are coming in at 0.75ms pulsewidth and don't seem to go lower. I'm just curious because the specs on these injectors show a minimum PW of 0.52ms.

I'm pretty sure I've run the crank VE table too lean, but it's hard to tell. It seems to be starting rough (long crank, sputtering start) when cool, warm and hot now. There seems to be a "black hole" startup spot where the ECT reads around 140f where once the valves have cooled down the difference between flooding and firing is awfully narrow.