340 has a hard time starting when hot?

famous bob said
Hornin in here , I have a return f.inj. set up "no boiling gas anywhere, when I drive the car and its warmed up , it wont turn over on the first hit of the key, second hit turns over and starts, has always done it when at normal temps. , but seems to be getting worse , did it upon cold start up yesterday. Cranks good when turning over ------Any ideas ??

That sounds like something electrical. If it does it faithfully, what I would do is watch your volt or amp gauge if you have one the first time you try it, OR put an amp meter on it and try it. If the meter or gauge does nothing or very little on that first attempt, you're losing "something" "somewhere".