Welcome to the 4 stroke yami team!! I too have a 2007 Attak GT... Great sleds. I guess we would need to ask a few baseline questions...
Is the sled studded? What carbides do you have up front? Did you buy this new? What weight rider did the dealer set it up for?
The dealer I bought mine from took a half hour to set it up to my riding style, weight, studs, woodies doolies, etc.
You can set your "sit in" shock adjustment for your weight on the rear end by going to the "TY Tech" section. It's listed above at the top in bold. There's great info there to help you get started. Feel free to ask questions too.
Again, welcome and good luck with your Attak!!
Joel