Posted by CK on March 05, 2002 at 00:53:39:
In Reply to: Re: Re: Re: Re: Enlarging the Throat on Conn Helleberg posted by cup or shank side? on March 04, 2002 at 23:59:04:
Shank Side with the cup on the rim on a towell and making sure it was straight. I used a drill press from a neighbor 2 doors down.