These aftermarket balancers are often too tight. I think the manufacturers think if it's too loose you will return it but if it's too tight they can just tell you to hone it. If it's that tight then it needs to be honed. You can't properly hone it with a regular hone because it has a keyway. And even if you could you don't have accurate enough measuring equipment for this job. (We are dealing in tenths here.) Most automotive machine shops have a Sunnen rod hone and a keyway mandrel. The B/RB spec is .0005"-.0015" with .001" preferred. Nothings easy any more.