Hi Guy/gals I just purchase a 2011 ktm 530exc. I am have problems with the acceleration when I go over 100kms. The only thing I could pin it on would be either old fuel, yet I have top it up with new stuff twice now. Or it's burning to much fuel than it requires. Has anybody else had this problem. It if help I have cleaned the air filter. Does this model over heat a lot? And would it be beneficial for a fan to be installed. This was happening on the highway too.