Hard to start when warm

Hi all,
This problem has been getting a little worse every time I try to start when the car gets warm. In the morning it starts fairly quick but the idle is up and down for a few minutes then evens out but does have a little miss to it.then I drve for a short time , shut it off to go shopping and then the only way it will start is if I hold the pedal to the floor and after 5-10 seconds it will start. So I haven't changed anything yet since I bought it about 5 months ago and am not really sure where to start so any advise would be greatly appreciated.

If I am going to keep a car, and have no idea of when it has been tuned up, I will start by doing one.

Changing dist caps, dist rotors and spark plugs may or may not address this issue, but there isn't much downside to changing them if it isn't known they were change recently.

I did order new Bosch plugs, any ideas On a good place to get the rest ??

Best is relative
The 928 vendors are likely to be able to answer questions too, so you may want to pick from one of them, depending on where you live, their locations might matter (in alphanumeric order):
928gt.com NC
928intl.com CA
928srus.com TX

If you shop prices, some of all of them, might be willing to match what you find, or explain why their offering is worth the extra money.

Good luck!

Thanks for the info

Hard starting warm may mean that it is not getting enough air or its getting to much fuel. It may mean that the injectors are leaking a little and you have to crank it over to clear it out.
But it could also be spark as the hotter the wires, plugs and coil the less efficient they are.
So like Stan said you can do an electrical tune up and replace plugs wires and cap and eliminate that but I thing the total cost will make you sputter.

Dose it start easier when warm if you open the throttle to let some air in?