I have a 2005 RXT and a 2006 RXP. Both are stock. I had been having a cavitation issue and power issue on the 2005 RXT that was being cause by a bad wear ring which is now corrected but i havent really rode the ski since to get a good feeling for fuel useage. My question is that my RXT uses about 2 times as much fuel on my RXP! Is this normal, was this being caused by my wear ring being bad a the ski not running right, or is there something else i need to look for? I have just changed the plugs in both about 2 months ago as well