My dad just bought a Summit 1000. He has put about 300 miles on and about 12 hours of riding on so far. The problem is the sled just won't get up to rpm's. On take off it will jump to 7000-7500 rpm's then it starts dropping. Looking for any advise to help the motor run cleaner and consistant. Also, does anybody have any suggestions on more air intake? The stock air intake with the scoop on the left side seems to just load up with powder and makes the motor bog. Any and all comments will help. Thanks.