Just hauled my "new" 1983 25+ and a hands on inspection confirmed play in the lower rudder shaft bushing. There is a flat ring loose on top of the rudder that appears like it may have been the rim of a plastic/nylon bushing that no longer exists. Can anyone describe and size what this bushing was originally? The steering has been converted to wheel steering so that complicates the removal somewhat. Also is the rudder a foam core or ? The shaft appears to be stainless steel. Love the "new" boat and the OMC saildrive. After some initial motor "sorting out pains" it performs very well. Thanks in advance for any help/info. Frank T