Yes, even when warmed up, still slow to crank. Cold or hot air, cold or hot engine, all the same.
Strong battery vs weak, thicker battery cables vs thinner: all the same.
Voltage checking: need to do for sure. Cleaned the 14 pin, all grounds have been polished (wire & plate recessed into the chassis). My battery ground is NOT to a factory-intended grounding point, but to a plate on my roll cage: wonder if that could be it?
However, I have tried the 1050cca battery linked directly to the starter, which should bypass this.
Mark