I bought a 2013 superjet with some aftermarket parts already on it. It has a rrp handle pole with blowsion bars and watercross of Texas ride plate and intake grate. The ski is very unstable at high speeds and wants to rock side to side. I'm used to Kawasaki 650 and 550 skis. This is my first superjet to own. I did change the ride plate to riva racing plate thinking it might make it more stable. Did not work. Does anybody have any ideas or is this a ski I'm going to just have to learn to ride?