Hot start problem - What else can I do?

[TM]

Have you checked your fuel injectors? It sounds like you may have
a fuel leakdown problem caused by leaky injectors w/ worn seals.

I had a similar problem in my 5ktq. I used a concentrated amount
of Techron combined with a hard run for about 30 min. to try and
clear out the gunk. It worked temporarily, but the permanent fix
was to replace the injectors- the car had approx. 185k on it, maybe
more at the time and I didn't know when the injectors were replaced
last.

Taka