My 10 is a bit persnickety about starting when it's hot out (regardless of her temperature), but always pops right off on the second try. But I had also been following the dealer instructions given when I picked her up to always wait for the engine and alarm lights to go off before hitting the starter. Which is 2 or 3 seconds after the pump stops. And adding more fuel to the start had no effect.
Recently - curious puck that I am - I decided to try going for the start right after the pump shut off, and damn if she don't start on the first try damn near every time now.
I've never been a fan of grinding on the starter, 2-3 turns tops and let go.
Scarlet Red 2010 Road Glide Custom named Trixie - She's a flashy little minx..
Basic black 1981 Tour Glide Classic named Alice - She's a sleeper project.