Valve cover gasket failure

I recently did a cylinder swap on my 50cc gy6 scooter. Upgraded to a 100cc cylinder so it definitely picks up quicker and might go faster once I break it in. Only issue is the valve cover gasket is crap. All it is is an o ring that fits into a groove and gets squished. My problem is it must have either gotten too squished and deformed or it just downright failed due to the different oil pressure from my new cylinder. I recently applied some permatex ultra black to see if that will fix the issue but I’ll have to see tomorrow. Anyways I wanted to know if there are different gaskets made that can fit my engine that aren’t the crappy o ring.