[T77911S]

what are the warm start issues?
as stated you do not have a residual pressure problem.

how is the ignition and timing? that has to be working great before you work on fuel issues.

have you had the mixture checked?

there are a couple of areas i am thinking about:
1. the O2 sensor. with it being a warm start issue (but not knowing what) i am wondering if it is still closed loop when you have a problem and it is pulling the mixture way off. (could just need a slight mixture adjustment or a new O2 or something with the lambda control unit).

2. with the CCP being so low is the WUR dropping the pressure low enough to cause it to be too rich when warm. what i would do here is with the gauges on and it having the hot start problem, remove power to the WUR. as soon as you get it started when warm, check the CP.
i believe the WUR can cool faster than the engine.

check the dwell of the FV when it is running and hot. i dont know if you can check it with the engine off but i would try that or either check it as soon as it starts when warm.

3. an injector problem. could be leaking.