Hello. I'm fairly new to this 250r thing but I'm hooked. I got a 83 250r that apparently has the 300 kit in it. And I pulled it apart to replace the base gasket and some how one of the rings got broken in the process. (drunk roomate). So now of course I can find a ring set anywhere. It is bored 1.00 over which puts it at 77mm. I have read a few things about a 330 kit for these hondaline motors. So my question to all of you trike guys is, where do I get one? And what do I have to do to my jug? Thanks.