Im repairing a 1985 689 series mariner 30 and the final job is to free up the pivot steering post . with immense force it will turn but it is not practically usable . i have the unit off and i want to seperate the pivot post from the bracket , i know i cant use heat as the bushes are plastic . Has anyone remove this post and are there any tips as to how it eventually comes apart . I have tried not so gentle persuasion with a hammer without any movement whatsoever . many thanks

