So here is my story.. I have a 97 yamaha waveventure 760 i bought used, used it for about 30 minutes until it started overheating and going into limp mode. I felt the motor when it claimed to be overheating and it didn't feel hot so me being the genius i am unhooked the temperature sensor and took it for a ride and seized one piston. When i try to turn by hand one piston moves the other doesn't. After it seized it occurred to me that the smoke and heat meant a bad headgasket Im assuming. This is my first jet ski so Im working on learning to work on it, i work on cars all the time so i am familiar with this style of work. What can i do to get going? Would a top end kit with piston and all help my situation? What are diagnostic steps to figure exactly what's wrong? Need this running asap.