I have decided to replace the OEM (Morse) steering system on my 21 ft. CC with a new Teleflex rotary helm NFB system. The boat is powered by a 130 HP Yamaha outboard. According to information received from Teleflex I can go with either the SS 147 (4 turns lock to lock) or the SS 132 (3 turns lock to lock). The current steering system is 3 turns. Any one have experience with 4 turns on a similat type craft? Any advantages/disadvantages to going from 3 to 4 turns lock to lock? All opinions and suggestions will be greatly appreciated.