Anyone out there had trouble with fuel lines harding inside of the fuel tank of their 4 strokes by Polaris? I have a 2007 IQ cruiser. The fuel lines broke apart like egg shells and the fuel pump sucked up the crap and failed. Polaris will not stand behind the repair. cost est: $1000.00 parts and labor. I was told that the high octane fuel is causing the problem, which Polaris tells us to use. Any ideas?