Randy, even if your new pressure plate and organic disc are light duty units, they should not cause these symptoms in street driving. So it is either
oil on the disc, like jhv48 says, or your throw out bearing is applying too much pre-load to the pressure plate (negative free play so to speak).
If you have a fork actuated t/o bearing, then you can feel the free play by wiggling the fork by hand. If you can't wiggle the fork or move it toward the slave cylinder by hand, then it is still under load and the threaded rod needs to be backed off.
If you have a concentric hydraulic t/o, then it could be applying too much preload to the pressure plate. These things are usually threaded on a collar, and you have to spin it around one or two revolutions to back it off. Unfortunately, you may not be able to do this without removing the tranny from the bellhousing
If fiddling with the throw out mechanism doesn't do the trick, you will have to pull the tranny and bellhousing and diagnose what's going on. Whatever it is, the solution will become apparent.
Sam