Oh no man, if it turns over by hand, I hope you don't mean that you can kick start it over with just pushing the kick lever with your hand. If that's the case then it's going to need to have the cylinders torn off. If you can bring it to a shop and have them do a leakdown test you can find out what your issue may be. Compression tests tell you the compression. But they don't tell the story. If you do a leakdown test with compressed air, you can listen for air coming from the intake, exhaust, or crankcase.