We here at Surewood Shafts have the ability to back taper shafts. If you have some of your own shafts, we will taper them even if they are not "Surewoods". Just go to our web site and go to "Price/Buy" page and download the Adobe Format PDF form, fill out and send in. The form has all the tapering options that we can do. If you have any other questions just PM me or call. Thanks Surewood Steve