My 96 GTX, isn't working. It has a power stop if we try to run it at 6000rpm. It will either turn off or it will drop down to 3000rpm, and then slowly go back up to 6000rpm. When it turns off it wont turn back on unless the key is removed and placed back on. The ski will run fine with no problems at 4000rpm but wont run to long at 5000rpm, and much less at 6000rpm. Also is this jetski suposed to make a lot of noise. its a really lowed machine. Does anyone know what could be the problem?