[DML] Irritating cold start problem

[DMC83in99@xxxx]

Ok, this has been a thorn in my side long enough, and I'm out of answers. 
When I crank my car, if it's been sitting for longer than an hour, it has a 
VERY BAD hesitation. It never stalls, but it comes as close as it can. 
After it makes it to about third gear, it's fine, no more hesitations. 
When I first got it, it wouldn't even start because of a faulty warm up 
regulator, which I replaced with one from Grady. While I was at it, I also 
replaced the thermo time switch and the cold start valve, just for peace of 
mind. What else could I be overlooking? I just had the fuel mix readjusted 
too, so it's right. I'm completely lost here. Any help as always is much 
appreciated!!

Scott