Hot starts require a lot of cranking, the longer it was left (but still hot) the longer I need to crank. If I just shut it off it starts fine.
On a cold start it will start and run for a second or 2 (I'm guessing because of the cold start valve) then shut off, and I'll have to crank it for a while to get it started.

Both of these long cranks can be shortened if I turn the ignition on like 10 times (it runs the fuel pump for 2 seconds each time you hit the ignition) so I'm losing fuel pressure somehow.