I traded in my motorcycle and Honda Quad for a 610 XC Mule. I was thinking the 610 was the engine size, Its not, its just a number they put on the body I guess. And its my own fault for not checking deeper. My BIL has a 610 Gator and I was led to believe they were the same. I have a good sized hill near by and his Gator will go up it and maintain speed, Mine slows down a lot. I dont mind the 25 MPH but if I am going to haul anything in mine I wont be able to make the hill unless i go to low, and thats about a good walk for speed. Is there anything I can do to be able to use this thing? Thanks for reading