The early boats were sold with 3/4" shafts. Due to vibration, they changed the spec to 1" shafts in later boats. There is no issue with upgrading to a 1" shaft.
On the feathering prop issue, as far as I know it's not allowable under one-design rules. For an official ruling, you have to check with the class measurer Larry Christy. His email is alchristy@comcast.net
[This message has been edited by jmruzzi (edited 11-09-2003).]
