Upgrade your Hardware or???
You can get Belleville Washers for your cylinder head here. https://hughesmotorized.com/upgraded-cylinder-head-hardware/
You can get Belleville Washers for your cylinder head here. https://hughesmotorized.com/upgraded-cylinder-head-hardware/
Retorque those heads after the first few rides to avoid issues and get rid of the junk hardware. The thermal cycling of getting hot and cold can loosen the head…