Hi having isolated the stiffness of the ahead and astern lever to where it passes through the lower engine casing and despite pumping loads of grease into it it is still far too stiff. How do I remove it to free it off? I believe it has a bolt from the inside that goes into the shaft. It is impossible to see but I can feel the head of what may be an 8 mm bolt. It is almost impossible to get a socket on it. Once this bolt is undone will the gear lever and shaft just pull out?