I don't think I understand what you are saying. Did you reuse the old headgasket or use a new one? If you used the old one, it will not seal right and you will have to tear it apart again and use a new one. You can only torque a headgasket down once.

If you used a new one, did you get the head resurfaced? Do a compression test to make sure everything is fine. The tester is cheap, so it wouldn't hurt.