95 Vette moist starting problem

I have a problem starting my 95m Vette on days when the humidity is very high or when it is raining. If the car is running and warm before the rain starts, the car will run fine during the rain. I have changed the distributor cap and rotor(what a pain of a job!). Has anyone out there had a similar problem and a solution?

sounds like it could be a mass airflow sensor problem, but im not sure, have you run the car for error codes yet?