I know that in order to run a 38 tooth rear sprocket on a blaster you have to grind the sprocket carrier a lil' to allow the chain to sit down on the sprocket all the way.I have heard of using a honda sprocket carrier to remedy this.I was just wondering if the bolt patterns are the same.Rocky Mountain does not list any smaller than a 40 tooth for the blaster, and I am currently running a 14T Front/41T Rear.