Hard HOT starting

This is an easy diagnoses if it's boiling the fuel. Next time you shut it off hot, just pop the air filter house off, and hang around looking for smoke coming out of the airhorn. You can also lean over the top and look for fuel dripage down into the bores.
But my money is on a messed up T-port sync.

And here's why; I run 87E10, and have since it came to town in about 1999. I run my engine hotter than most, with a water temp of 205*F.I run aluminum heads, a 230* cam,uncoated TTIs, and 10.7Scr. I run a factory 26" A/C rad with a thermal clutch-fan.I run a mechanical pump and 3/8 steel line all the way(no rubber on the pressure side); the Big steel filter is on the suction side, at the back.No fancy ignition system either, just the large Accell Super Coil, and idle timing is just 14*. Even on a cool day, it is hot as Hades under that hood. The only help the old Holley 750DP has is the AG manifold.And in part throttle use, that's as good as no help at all.
Bottom line is it never boils the fuel, no matter how hard I run it.I just touch the key and it jumps to life.

But if your T-port sync is out, you will have problems....................
As also you will if the valves are not fully closing.