I Am Replacing The Carrier O-ring And The Prop Shaft Seals In A 1988 Mercury Xr4 150. This Gearcase Is A Cam Shift Type. My Question Is According To My Clymer Manual 1972 - 1989 On Page 305 Chapter 9 The Bearing Carrier Nut Is To Be Tightened To 210 Ft-lbs.,is This Correct??? That Seems Like To...