Snow Blowers

I recently purchased a 1830EXL and was told Husqvarna's high performance impeller kit (#532187724) would fit the 27" and 30" models. Well, it doesn't fit the 30" model. The hole diameter of the new impeller pulley is much smaller then the diameter of the engine crankshaft. My question is, does Husqvarna make a high performance impeller kit that works on their 1830EXL 30" model? Thanks, Bob