aluminum flywheel help!

I bought a fidanza flywheel and a stage 3 clutch and I know very little about clutchs if im right dont the 3 pins on the flywheel go into the clutch? If so I can not get it to fit right they get in the holes a little bit but dont slide all the way in. It says that if there is fitment problems to get a hot plate would that make it fit? what is a hotplate and where do I get one?